[Commit-gnuradio] [gnuradio] 06/08: examples: removed extra titles or le

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[Commit-gnuradio] [gnuradio] 06/08: examples: removed extra titles or le

From:	git
Subject:	[Commit-gnuradio] [gnuradio] 06/08: examples: removed extra titles or legends from QTGUI blocks in examples.
Date:	Wed, 5 Aug 2015 20:50:47 +0000 (UTC)
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jcorgan pushed a commit to branch master
in repository gnuradio.

commit fee49faacaa8b5e1492ee5b001b7e732ff8cf259
Author: Tom Rondeau <address@hidden>
Date:   Wed Aug 5 16:31:46 2015 -0400

    examples: removed extra titles or legends from QTGUI blocks in examples.
    
    They just take up space and provide no info. Where used to
    differentiate graphs or lines, they are kept in.
---
 gr-fec/examples/ber_test.grc                  |   18 +-
 gr-fec/examples/fecapi_async_decoders.grc     | 1975 +++++++------
 gr-fec/examples/fecapi_async_encoders.grc     | 1521 +++++-----
 gr-fec/examples/fecapi_async_to_stream.grc    | 1929 +++++++------
 gr-fec/examples/fecapi_encoders.grc           |   14 +-
 gr-fec/examples/fecapi_tagged_encoders.grc    | 2537 +++++++++--------
 gr-filter/examples/channelizer_demo.grc       | 1187 +++++---
 gr-filter/examples/resampler_demo.grc         |  903 +++---
 gr-uhd/examples/grc/uhd_dpsk_mod.grc          | 3783 ++++++++++++++-----------
 gr-uhd/examples/grc/uhd_fft.grc               |   24 +-
 gr-uhd/examples/grc/uhd_rx_dpsk.grc           | 1411 +++++----
 gr-uhd/examples/grc/uhd_two_tone_loopback.grc | 2623 +++++++++--------
 gr-uhd/examples/grc/uhd_tx_dpsk.grc           | 1329 +++++----
 gr-uhd/examples/grc/uhd_wbfm_receive.grc      | 1521 +++++-----
 gr-zeromq/examples/zeromq_pubsub.grc          |  691 ++---
 gr-zeromq/examples/zeromq_pushpull.grc        |  713 ++---
 gr-zeromq/examples/zeromq_reqrep.grc          |  707 ++---
 gr-zeromq/examples/zmq_stream.grc             | 1644 ++++++-----
 18 files changed, 13628 insertions(+), 10902 deletions(-)

diff --git a/gr-fec/examples/ber_test.grc b/gr-fec/examples/ber_test.grc
index 3afd558..090136a 100644
--- a/gr-fec/examples/ber_test.grc
+++ b/gr-fec/examples/ber_test.grc
@@ -1,5 +1,5 @@
-<?xml version='1.0' encoding='ASCII'?>
-<?grc format='1' created='3.7.8'?>
+<?xml version='1.0' encoding='utf-8'?>
+<?grc format='1' created='3.7.8rc1'?>
 <flow_graph>
   <timestamp>Mon May 12 21:49:02 2014</timestamp>
   <block>
@@ -13,6 +13,10 @@
       <value></value>
     </param>
     <param>
+      <key>window_size</key>
+      <value>2000,2000</value>
+    </param>
+    <param>
       <key>category</key>
       <value>Custom</value>
     </param>
@@ -68,10 +72,6 @@
       <key>title</key>
       <value>simple BER test</value>
     </param>
-    <param>
-      <key>window_size</key>
-      <value>2000,2000</value>
-    </param>
   </block>
   <block>
     <key>variable</key>
@@ -1310,7 +1310,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1384, 235)</value>
+      <value>(1368, 243)</value>
     </param>
     <param>
       <key>gui_hint</key>
@@ -1330,7 +1330,7 @@
     </param>
     <param>
       <key>legend</key>
-      <value>True</value>
+      <value>False</value>
     </param>
     <param>
       <key>alpha1</key>
@@ -1574,7 +1574,7 @@
     </param>
     <param>
       <key>name</key>
-      <value>QT GUI Plot</value>
+      <value></value>
     </param>
     <param>
       <key>nconnections</key>
diff --git a/gr-fec/examples/fecapi_async_decoders.grc 
b/gr-fec/examples/fecapi_async_decoders.grc
index 42429ec..985d996 100644
--- a/gr-fec/examples/fecapi_async_decoders.grc
+++ b/gr-fec/examples/fecapi_async_decoders.grc
@@ -1,26 +1,15 @@
-<?xml version='1.0' encoding='ASCII'?>
+<?xml version='1.0' encoding='utf-8'?>
+<?grc format='1' created='3.7.8rc1'?>
 <flow_graph>
   <timestamp>Tue May 20 15:23:14 2014</timestamp>
   <block>
     <key>options</key>
     <param>
-      <key>id</key>
-      <value>fecapi_async_decoders</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>title</key>
-      <value></value>
-    </param>
-    <param>
       <key>author</key>
       <value></value>
     </param>
     <param>
-      <key>description</key>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
@@ -28,32 +17,20 @@
       <value>2000,2000</value>
     </param>
     <param>
-      <key>generate_options</key>
-      <value>qt_gui</value>
-    </param>
-    <param>
       <key>category</key>
       <value>Custom</value>
     </param>
     <param>
-      <key>run_options</key>
-      <value>prompt</value>
-    </param>
-    <param>
-      <key>run</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>max_nouts</key>
-      <value>0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>realtime_scheduling</key>
+      <key>description</key>
       <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
@@ -63,315 +40,319 @@
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>samp_rate</value>
+      <key>generate_options</key>
+      <value>qt_gui</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>id</key>
+      <value>fecapi_async_decoders</value>
     </param>
     <param>
-      <key>value</key>
-      <value>50000</value>
+      <key>max_nouts</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>realtime_scheduling</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(10, 73)</value>
+      <key>run_options</key>
+      <value>prompt</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>run</key>
+      <value>True</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>k</value>
+      <key>thread_safe_setters</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>title</key>
+      <value></value>
     </param>
+  </block>
+  <block>
+    <key>variable_cc_decoder_def</key>
     <param>
-      <key>value</key>
-      <value>7</value>
+      <key>padding</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(264, 535)</value>
+      <key>k</key>
+      <value>k</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>dim1</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>polys</value>
+      <key>dim2</key>
+      <value>4</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>value</key>
-      <value>[109, 79]</value>
+      <key>state_end</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>framebits</key>
+      <value>8000</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(308, 600)</value>
+      <value>(401, 687)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>rate</value>
+      <value>dec_cc</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>value</key>
+      <value>"ok"</value>
     </param>
     <param>
-      <key>value</key>
-      <value>2</value>
+      <key>ndim</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>polys</key>
+      <value>polys</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(332, 536)</value>
+      <key>rate</key>
+      <value>rate</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>state_start</key>
       <value>0</value>
     </param>
+    <param>
+      <key>mode</key>
+      <value>fec.CC_TERMINATED</value>
+    </param>
   </block>
   <block>
-    <key>variable</key>
+    <key>variable_dummy_decoder_def</key>
     <param>
-      <key>id</key>
-      <value>rep</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>dim1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>value</key>
-      <value>3</value>
+      <key>dim2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>framebits</key>
+      <value>8000</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(785, 473)</value>
+      <value>(598, 636)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>parameter</key>
     <param>
       <key>id</key>
-      <value>frame_size</value>
+      <value>dec_dummy</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>value</key>
+      <value>"ok"</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Frame Size</value>
+      <key>ndim</key>
+      <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>variable_repetition_decoder_def</key>
     <param>
-      <key>value</key>
-      <value>30</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>type</key>
-      <value>intx</value>
+      <key>dim1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>short_id</key>
-      <value></value>
+      <key>dim2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>framebits</key>
+      <value>8000</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(171, 11)</value>
+      <value>(781, 651)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>parameter</key>
     <param>
       <key>id</key>
-      <value>puncpat</value>
+      <value>dec_rep</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>value</key>
+      <value>"ok"</value>
     </param>
     <param>
-      <key>label</key>
-      <value></value>
+      <key>ndim</key>
+      <value>0</value>
     </param>
     <param>
-      <key>value</key>
-      <value>'11'</value>
+      <key>rep</key>
+      <value>rep</value>
     </param>
     <param>
-      <key>type</key>
-      <value>string</value>
+      <key>prob</key>
+      <value>0.5</value>
     </param>
+  </block>
+  <block>
+    <key>variable_cc_encoder_def</key>
     <param>
-      <key>short_id</key>
-      <value></value>
+      <key>padding</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(282, 11)</value>
+      <key>k</key>
+      <value>k</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>dim1</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_ctrlport_monitor_performance</key>
     <param>
-      <key>id</key>
-      <value>blocks_ctrlport_monitor_performance_0</value>
+      <key>dim2</key>
+      <value>1</value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>en</key>
       <value>True</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>framebits</key>
+      <value>8000</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(366, 10)</value>
+      <value>(401, 510)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_throttle</key>
     <param>
       <key>id</key>
-      <value>blocks_throttle_0</value>
+      <value>enc_cc</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>ndim</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
-    </param>
+      <key>polys</key>
+      <value>polys</value>
+    </param>
     <param>
-      <key>samples_per_second</key>
-      <value>samp_rate</value>
+      <key>rate</key>
+      <value>rate</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>state_start</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ignoretag</key>
-      <value>True</value>
+      <key>mode</key>
+      <value>fec.CC_TERMINATED</value>
     </param>
+  </block>
+  <block>
+    <key>variable_ccsds_encoder_def</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>dim1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>dim2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>framebits</key>
+      <value>8000</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(109, 224)</value>
+      <value>(992, 537)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_dummy_encoder_def</key>
     <param>
       <key>id</key>
-      <value>enc_dummy</value>
+      <value>enc_ccsds</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>ndim</key>
+      <value>0</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>state_start</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ndim</key>
-      <value>0</value>
+      <key>mode</key>
+      <value>fec.CC_TERMINATED</value>
+    </param>
+  </block>
+  <block>
+    <key>variable_dummy_encoder_def</key>
+    <param>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>dim1</key>
@@ -382,12 +363,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>framebits</key>
+      <value>8000</value>
     </param>
     <param>
       <key>_coordinate</key>
@@ -397,790 +378,904 @@
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_dummy_decoder_def</key>
     <param>
       <key>id</key>
-      <value>dec_dummy</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <value>enc_dummy</value>
     </param>
     <param>
       <key>ndim</key>
       <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>variable_repetition_encoder_def</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
     <param>
       <key>dim1</key>
-      <value>1</value>
+      <value>4</value>
     </param>
     <param>
       <key>dim2</key>
       <value>1</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>framebits</key>
+      <value>8000</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(598, 636)</value>
+      <value>(781, 538)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_tagged_stream_to_pdu</key>
     <param>
       <key>id</key>
-      <value>blocks_tagged_stream_to_pdu_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>enc_rep</value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>ndim</key>
+      <value>0</value>
     </param>
     <param>
-      <key>tag</key>
-      <value>pkt_len</value>
+      <key>rep</key>
+      <value>rep</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>_coordinate</key>
+      <value>(264, 535)</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(364, 143)</value>
+      <key>id</key>
+      <value>k</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>value</key>
+      <value>7</value>
     </param>
   </block>
   <block>
-    <key>blocks_stream_to_tagged_stream</key>
+    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>blocks_stream_to_tagged_stream_0_0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>_coordinate</key>
+      <value>(308, 600)</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>packet_len</key>
-      <value>frame_size</value>
+      <key>id</key>
+      <value>polys</value>
     </param>
     <param>
-      <key>len_tag_key</key>
-      <value>pkt_len</value>
+      <key>value</key>
+      <value>[109, 79]</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>_coordinate</key>
+      <value>(332, 536)</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(69, 281)</value>
+      <key>id</key>
+      <value>rate</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>180</value>
+      <key>value</key>
+      <value>2</value>
     </param>
   </block>
   <block>
-    <key>blocks_pdu_to_tagged_stream</key>
+    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>blocks_pdu_to_tagged_stream_0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>_coordinate</key>
+      <value>(785, 473)</value>
     </param>
     <param>
-      <key>tag</key>
-      <value>pkt_len</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>id</key>
+      <value>rep</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>value</key>
+      <value>3</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(411, 239)</value>
+      <value>(10, 73)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_map_bb</key>
     <param>
       <key>id</key>
-      <value>digital_map_bb_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>map</key>
-      <value>[-1,1]</value>
+      <key>value</key>
+      <value>50000</value>
     </param>
+  </block>
+  <block>
+    <key>analog_random_source_x</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>False</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(409, 311)</value>
+      <value>(50, 502)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>180</value>
     </param>
-  </block>
-  <block>
-    <key>variable_repetition_encoder_def</key>
     <param>
       <key>id</key>
-      <value>enc_rep</value>
+      <value>analog_random_source_x_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>max</key>
+      <value>256</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>4</value>
+      <key>min</key>
+      <value>0</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>num_samps</key>
+      <value>1000</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>type</key>
+      <value>byte</value>
     </param>
     <param>
-      <key>rep</key>
-      <value>rep</value>
+      <key>repeat</key>
+      <value>True</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_char_to_float</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(781, 538)</value>
+      <value>(865, 308)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_repetition_decoder_def</key>
     <param>
       <key>id</key>
-      <value>dec_rep</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>blocks_char_to_float_0_0_0_0</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
+      <key>scale</key>
       <value>1</value>
     </param>
     <param>
-      <key>dim2</key>
+      <key>vlen</key>
       <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_char_to_float</key>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>rep</key>
-      <value>rep</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>prob</key>
-      <value>0.5</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(781, 651)</value>
+      <value>(408, 375)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_repack_bits_bb</key>
     <param>
       <key>id</key>
-      <value>blocks_repack_bits_bb_0_0</value>
+      <value>blocks_char_to_float_0_1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>k</key>
-      <value>8</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>l</key>
+      <key>scale</key>
       <value>1</value>
     </param>
     <param>
-      <key>len_tag_key</key>
-      <value>pkt_len</value>
-    </param>
-    <param>
-      <key>align_output</key>
-      <value>False</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_char_to_float</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(137, 354)</value>
+      <value>(420, 430)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_char_to_float</key>
     <param>
       <key>id</key>
       <value>blocks_char_to_float_0_1_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
       <key>scale</key>
       <value>1</value>
     </param>
     <param>
+      <key>vlen</key>
+      <value>1</value>
+    </param>
+  </block>
+  <block>
+    <key>blocks_ctrlport_monitor_performance</key>
+    <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>False</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>en</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(420, 430)</value>
+      <value>(366, 10)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_time_sink_x</key>
     <param>
       <key>id</key>
-      <value>qtgui_time_sink_x_0</value>
+      <value>blocks_ctrlport_monitor_performance_0</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_pdu_to_tagged_stream</key>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>type</key>
-      <value>float</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>name</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>size</key>
-      <value>512</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>srate</key>
-      <value>samp_rate</value>
+      <key>_coordinate</key>
+      <value>(411, 239)</value>
     </param>
     <param>
-      <key>autoscale</key>
-      <value>False</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-0.5</value>
+      <key>id</key>
+      <value>blocks_pdu_to_tagged_stream_0</value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>1.5</value>
+      <key>type</key>
+      <value>byte</value>
     </param>
     <param>
-      <key>nconnections</key>
-      <value>2</value>
+      <key>tag</key>
+      <value>pkt_len</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.01</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>entags</key>
-      <value>True</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_pdu_to_tagged_stream</key>
     <param>
-      <key>gui_hint</key>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>tr_delay</key>
-      <value>0</value>
+      <key>_coordinate</key>
+      <value>(860, 224)</value>
     </param>
     <param>
-      <key>tr_chan</key>
-      <value>0</value>
+      <key>_rotation</key>
+      <value>180</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>""</value>
+      <key>id</key>
+      <value>blocks_pdu_to_tagged_stream_0_0</value>
     </param>
     <param>
-      <key>label1</key>
-      <value>Decoded</value>
+      <key>type</key>
+      <value>byte</value>
     </param>
     <param>
-      <key>width1</key>
-      <value>1</value>
+      <key>tag</key>
+      <value>pkt_len</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style1</key>
-      <value>1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_repack_bits_bb</key>
     <param>
-      <key>marker1</key>
-      <value>-1</value>
+      <key>k</key>
+      <value>8</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>l</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label2</key>
-      <value>Input</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>style2</key>
-      <value>1</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>marker2</key>
-      <value>-1</value>
+      <key>endianness</key>
+      <value>gr.GR_LSB_FIRST</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>0.6</value>
+      <key>_coordinate</key>
+      <value>(137, 354)</value>
     </param>
     <param>
-      <key>label3</key>
-      <value>Rep. (Rate=3)</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>id</key>
+      <value>blocks_repack_bits_bb_0_0</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>len_tag_key</key>
+      <value>pkt_len</value>
     </param>
     <param>
-      <key>style3</key>
-      <value>1</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>marker3</key>
-      <value>-1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>align_output</key>
+      <value>False</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_stream_to_tagged_stream</key>
     <param>
-      <key>label4</key>
-      <value>CC (K=7, Rate=2)</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>style4</key>
-      <value>1</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>marker4</key>
-      <value>-1</value>
+      <key>_coordinate</key>
+      <value>(69, 281)</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>_rotation</key>
+      <value>180</value>
     </param>
     <param>
-      <key>label5</key>
-      <value>CCSDS</value>
+      <key>id</key>
+      <value>blocks_stream_to_tagged_stream_0_0</value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>len_tag_key</key>
+      <value>pkt_len</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style5</key>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>packet_len</key>
+      <value>frame_size</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>byte</value>
+    </param>
+    <param>
+      <key>vlen</key>
       <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_tagged_stream_to_pdu</key>
     <param>
-      <key>marker5</key>
-      <value>-1</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>label6</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
+      <key>_coordinate</key>
+      <value>(364, 143)</value>
     </param>
     <param>
-      <key>style6</key>
-      <value>1</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>marker6</key>
-      <value>-1</value>
+      <key>id</key>
+      <value>blocks_tagged_stream_to_pdu_0</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>type</key>
+      <value>byte</value>
     </param>
     <param>
-      <key>label7</key>
+      <key>tag</key>
+      <value>pkt_len</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+  </block>
+  <block>
+    <key>blocks_tagged_stream_to_pdu</key>
+    <param>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>style7</key>
-      <value>1</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>marker7</key>
-      <value>-1</value>
+      <key>_coordinate</key>
+      <value>(601, 375)</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label8</key>
-      <value></value>
+      <key>id</key>
+      <value>blocks_tagged_stream_to_pdu_1</value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>type</key>
+      <value>float</value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>tag</key>
+      <value>pkt_len</value>
     </param>
     <param>
-      <key>style8</key>
-      <value>1</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>marker8</key>
-      <value>-1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_throttle</key>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>label9</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>style9</key>
-      <value>1</value>
+      <key>_coordinate</key>
+      <value>(109, 224)</value>
     </param>
     <param>
-      <key>marker9</key>
-      <value>-1</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>id</key>
+      <value>blocks_throttle_0</value>
     </param>
     <param>
-      <key>label10</key>
-      <value></value>
+      <key>ignoretag</key>
+      <value>True</value>
     </param>
     <param>
-      <key>width10</key>
-      <value>1</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"blue"</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style10</key>
-      <value>1</value>
+      <key>samples_per_second</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>marker10</key>
-      <value>-1</value>
+      <key>type</key>
+      <value>byte</value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_vector_source_x</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(1059, 368)</value>
+      <value>(60, 140)</value>
     </param>
     <param>
       <key>_rotation</key>
+      <value>180</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>blocks_vector_source_x_0_1_0</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>byte</value>
+    </param>
+    <param>
+      <key>repeat</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>tags</key>
+      <value>[]</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>vector</key>
+      <value>(frame_size/15)*[0, 0, 1, 0, 3, 0, 7, 0, 15, 0, 31, 0, 63, 0, 
127]</value>
+    </param>
   </block>
   <block>
-    <key>fec_async_decoder</key>
+    <key>digital_map_bb</key>
     <param>
-      <key>id</key>
-      <value>fec_async_decoder_0</value>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>decoder</key>
-      <value>dec_cc</value>
+      <key>_coordinate</key>
+      <value>(409, 311)</value>
     </param>
     <param>
-      <key>packed</key>
-      <value>False</value>
+      <key>_rotation</key>
+      <value>180</value>
     </param>
     <param>
-      <key>rev_pack</key>
-      <value>True</value>
+      <key>id</key>
+      <value>digital_map_bb_0</value>
     </param>
     <param>
+      <key>map</key>
+      <value>[-1,1]</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+  </block>
+  <block>
+    <key>fec_async_decoder</key>
+    <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>decoder</key>
+      <value>dec_cc</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
@@ -1190,953 +1285,981 @@
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_pdu_to_tagged_stream</key>
     <param>
       <key>id</key>
-      <value>blocks_pdu_to_tagged_stream_0_0</value>
+      <value>fec_async_decoder_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>tag</key>
-      <value>pkt_len</value>
+      <key>packed</key>
+      <value>False</value>
     </param>
     <param>
+      <key>rev_pack</key>
+      <value>True</value>
+    </param>
+  </block>
+  <block>
+    <key>fec_async_encoder</key>
+    <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>encoder</key>
+      <value>enc_ccsds</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(860, 224)</value>
+      <value>(600, 143)</value>
     </param>
     <param>
       <key>_rotation</key>
-      <value>180</value>
+      <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_char_to_float</key>
     <param>
       <key>id</key>
-      <value>blocks_char_to_float_0_0_0_0</value>
+      <value>fec_async_encoder_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>scale</key>
-      <value>1</value>
+      <key>packed</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>rev_pack</key>
+      <value>True</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>rev_unpack</key>
+      <value>True</value>
+    </param>
+  </block>
+  <block>
+    <key>parameter</key>
+    <param>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(865, 308)</value>
+      <value>(171, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_tagged_stream_to_pdu</key>
     <param>
       <key>id</key>
-      <value>blocks_tagged_stream_to_pdu_1</value>
+      <value>frame_size</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label</key>
+      <value>Frame Size</value>
+    </param>
+    <param>
+      <key>short_id</key>
+      <value></value>
     </param>
     <param>
       <key>type</key>
-      <value>float</value>
+      <value>intx</value>
     </param>
     <param>
-      <key>tag</key>
-      <value>pkt_len</value>
+      <key>value</key>
+      <value>30</value>
     </param>
+  </block>
+  <block>
+    <key>parameter</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(601, 375)</value>
+      <value>(282, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_vector_source_x</key>
     <param>
       <key>id</key>
-      <value>blocks_vector_source_x_0_1_0</value>
+      <value>puncpat</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label</key>
+      <value></value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>short_id</key>
+      <value></value>
     </param>
     <param>
-      <key>vector</key>
-      <value>(frame_size/15)*[0, 0, 1, 0, 3, 0, 7, 0, 15, 0, 31, 0, 63, 0, 
127]</value>
+      <key>type</key>
+      <value>string</value>
     </param>
     <param>
-      <key>tags</key>
-      <value>[]</value>
+      <key>value</key>
+      <value>'11'</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_time_sink_x</key>
     <param>
-      <key>repeat</key>
-      <value>True</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>ctrlpanel</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>entags</key>
+      <value>True</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(60, 140)</value>
+      <value>(1059, 368)</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>180</value>
+      <key>gui_hint</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>analog_random_source_x</key>
     <param>
-      <key>id</key>
-      <value>analog_random_source_x_0</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_enabled</key>
+      <key>grid</key>
       <value>False</value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>id</key>
+      <value>qtgui_time_sink_x_0</value>
     </param>
     <param>
-      <key>min</key>
-      <value>0</value>
+      <key>legend</key>
+      <value>True</value>
     </param>
     <param>
-      <key>max</key>
-      <value>256</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>num_samps</key>
-      <value>1000</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>repeat</key>
-      <value>True</value>
+      <key>label1</key>
+      <value>Decoded</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>marker1</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>style1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(50, 502)</value>
+      <key>color10</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>180</value>
+      <key>label10</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>variable_cc_encoder_def</key>
     <param>
-      <key>id</key>
-      <value>enc_cc</value>
+      <key>marker10</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>style10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>ndim</key>
-      <value>0</value>
+      <key>alpha2</key>
+      <value>0.6</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>label2</key>
+      <value>Input</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>marker2</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>k</key>
-      <value>k</value>
+      <key>style2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>rate</key>
-      <value>rate</value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>polys</key>
-      <value>polys</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>state_start</key>
-      <value>0</value>
+      <key>color3</key>
+      <value>"green"</value>
     </param>
     <param>
-      <key>mode</key>
-      <value>fec.CC_TERMINATED</value>
+      <key>label3</key>
+      <value>Rep. (Rate=3)</value>
     </param>
     <param>
-      <key>padding</key>
-      <value>False</value>
+      <key>marker3</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>style3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(401, 510)</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_cc_decoder_def</key>
     <param>
-      <key>id</key>
-      <value>dec_cc</value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label4</key>
+      <value>CC (K=7, Rate=2)</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>marker4</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>ndim</key>
-      <value>0</value>
+      <key>style4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>dim1</key>
+      <key>width4</key>
       <value>1</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>4</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
     <param>
-      <key>k</key>
-      <value>k</value>
+      <key>label5</key>
+      <value>CCSDS</value>
     </param>
     <param>
-      <key>rate</key>
-      <value>rate</value>
+      <key>marker5</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>polys</key>
-      <value>polys</value>
+      <key>style5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>state_start</key>
-      <value>0</value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>state_end</key>
-      <value>-1</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>mode</key>
-      <value>fec.CC_TERMINATED</value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
     <param>
-      <key>padding</key>
-      <value>False</value>
+      <key>label6</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>marker6</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(401, 687)</value>
+      <key>style6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>width6</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>variable_ccsds_encoder_def</key>
     <param>
-      <key>id</key>
-      <value>enc_ccsds</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>label7</key>
+      <value></value>
     </param>
     <param>
-      <key>ndim</key>
-      <value>0</value>
+      <key>marker7</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>dim1</key>
+      <key>style7</key>
       <value>1</value>
     </param>
     <param>
-      <key>dim2</key>
+      <key>width7</key>
       <value>1</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>state_start</key>
-      <value>0</value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
     <param>
-      <key>mode</key>
-      <value>fec.CC_TERMINATED</value>
+      <key>label8</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>marker8</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(992, 537)</value>
+      <key>style8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>width8</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>fec_async_encoder</key>
     <param>
-      <key>id</key>
-      <value>fec_async_encoder_0</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
     <param>
-      <key>encoder</key>
-      <value>enc_ccsds</value>
+      <key>label9</key>
+      <value></value>
     </param>
     <param>
-      <key>packed</key>
-      <value>False</value>
+      <key>marker9</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>rev_unpack</key>
-      <value>True</value>
+      <key>style9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>rev_pack</key>
-      <value>True</value>
+      <key>width9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>name</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>nconnections</key>
+      <value>2</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>size</key>
+      <value>512</value>
+    </param>
+    <param>
+      <key>srate</key>
+      <value>samp_rate</value>
+    </param>
+    <param>
+      <key>tr_chan</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>tr_delay</key>
       <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(600, 143)</value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_time_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_time_sink_x_1</value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>tr_tag</key>
+      <value>""</value>
     </param>
     <param>
       <key>type</key>
       <value>float</value>
     </param>
     <param>
-      <key>name</key>
-      <value></value>
+      <key>update_time</key>
+      <value>0.01</value>
     </param>
     <param>
-      <key>size</key>
-      <value>1024</value>
+      <key>ylabel</key>
+      <value>Amplitude</value>
     </param>
     <param>
-      <key>srate</key>
-      <value>samp_rate</value>
+      <key>yunit</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>ymax</key>
+      <value>1.5</value>
+    </param>
+    <param>
+      <key>ymin</key>
+      <value>-0.5</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_time_sink_x</key>
     <param>
       <key>autoscale</key>
       <value>False</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-1</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>1</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>nconnections</key>
-      <value>1</value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
       <key>entags</key>
       <value>True</value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(639, 250)</value>
+    </param>
+    <param>
       <key>gui_hint</key>
       <value></value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>id</key>
+      <value>qtgui_time_sink_x_1</value>
     </param>
     <param>
-      <key>tr_delay</key>
-      <value>0</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>tr_chan</key>
-      <value>0</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>""</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
       <key>label1</key>
       <value></value>
     </param>
     <param>
+      <key>marker1</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style1</key>
+      <value>1</value>
+    </param>
+    <param>
       <key>width1</key>
       <value>1</value>
     </param>
     <param>
-      <key>color1</key>
+      <key>alpha10</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color10</key>
       <value>"blue"</value>
     </param>
     <param>
-      <key>style1</key>
-      <value>1</value>
+      <key>label10</key>
+      <value></value>
     </param>
     <param>
-      <key>marker1</key>
+      <key>marker10</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>style10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label2</key>
-      <value></value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color2</key>
       <value>"red"</value>
     </param>
     <param>
-      <key>style2</key>
-      <value>1</value>
+      <key>label2</key>
+      <value></value>
     </param>
     <param>
       <key>marker2</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>style2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label3</key>
-      <value></value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color3</key>
       <value>"green"</value>
     </param>
     <param>
-      <key>style3</key>
-      <value>1</value>
+      <key>label3</key>
+      <value></value>
     </param>
     <param>
       <key>marker3</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label4</key>
-      <value></value>
+      <key>style3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width4</key>
+      <key>width3</key>
       <value>1</value>
     </param>
     <param>
+      <key>alpha4</key>
+      <value>1.0</value>
+    </param>
+    <param>
       <key>color4</key>
       <value>"black"</value>
     </param>
     <param>
-      <key>style4</key>
-      <value>1</value>
+      <key>label4</key>
+      <value></value>
     </param>
     <param>
       <key>marker4</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>style4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label5</key>
-      <value></value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color5</key>
       <value>"cyan"</value>
     </param>
     <param>
-      <key>style5</key>
-      <value>1</value>
+      <key>label5</key>
+      <value></value>
     </param>
     <param>
       <key>marker5</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>style5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label6</key>
-      <value></value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color6</key>
       <value>"magenta"</value>
     </param>
     <param>
-      <key>style6</key>
-      <value>1</value>
+      <key>label6</key>
+      <value></value>
     </param>
     <param>
       <key>marker6</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>style6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label7</key>
-      <value></value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color7</key>
       <value>"yellow"</value>
     </param>
     <param>
-      <key>style7</key>
-      <value>1</value>
+      <key>label7</key>
+      <value></value>
     </param>
     <param>
       <key>marker7</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>style7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label8</key>
-      <value></value>
+      <key>width7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color8</key>
       <value>"dark red"</value>
     </param>
     <param>
-      <key>style8</key>
-      <value>1</value>
+      <key>label8</key>
+      <value></value>
     </param>
     <param>
       <key>marker8</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>style8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label9</key>
-      <value></value>
+      <key>width8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color9</key>
       <value>"dark green"</value>
     </param>
     <param>
-      <key>style9</key>
-      <value>1</value>
+      <key>label9</key>
+      <value></value>
     </param>
     <param>
       <key>marker9</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width10</key>
+      <key>style9</key>
       <value>1</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>style10</key>
+      <key>width9</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker10</key>
-      <value>-1</value>
+      <key>name</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>size</key>
+      <value>1024</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>srate</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(639, 250)</value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>tr_delay</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_char_to_float</key>
     <param>
-      <key>id</key>
-      <value>blocks_char_to_float_0_1</value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
     <param>
-      <key>scale</key>
-      <value>1</value>
+      <key>tr_tag</key>
+      <value>""</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>type</key>
+      <value>float</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>ylabel</key>
+      <value>Amplitude</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>yunit</key>
+      <value>""</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(408, 375)</value>
+      <key>ymax</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>ymin</key>
+      <value>-1</value>
     </param>
   </block>
   <connection>
-    <source_block_id>blocks_vector_source_x_0_1_0</source_block_id>
+    <source_block_id>analog_random_source_x_0</source_block_id>
     <sink_block_id>blocks_throttle_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>analog_random_source_x_0</source_block_id>
-    <sink_block_id>blocks_throttle_0</sink_block_id>
+    <source_block_id>blocks_char_to_float_0_0_0_0</source_block_id>
+    <sink_block_id>qtgui_time_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_throttle_0</source_block_id>
-    <sink_block_id>blocks_stream_to_tagged_stream_0_0</sink_block_id>
+    <source_block_id>blocks_char_to_float_0_1</source_block_id>
+    <sink_block_id>blocks_tagged_stream_to_pdu_1</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_map_bb_0</source_block_id>
-    <sink_block_id>blocks_char_to_float_0_1</sink_block_id>
+    <source_block_id>blocks_char_to_float_0_1</source_block_id>
+    <sink_block_id>qtgui_time_sink_x_1</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>fec_async_decoder_0</source_block_id>
-    <sink_block_id>blocks_pdu_to_tagged_stream_0_0</sink_block_id>
-    <source_key>out</source_key>
-    <sink_key>pdus</sink_key>
+    <source_block_id>blocks_char_to_float_0_1_0</source_block_id>
+    <sink_block_id>qtgui_time_sink_x_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>1</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_stream_to_tagged_stream_0_0</source_block_id>
-    <sink_block_id>blocks_repack_bits_bb_0_0</sink_block_id>
+    <source_block_id>blocks_pdu_to_tagged_stream_0</source_block_id>
+    <sink_block_id>digital_map_bb_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_repack_bits_bb_0_0</source_block_id>
-    <sink_block_id>blocks_tagged_stream_to_pdu_0</sink_block_id>
+    <source_block_id>blocks_pdu_to_tagged_stream_0_0</source_block_id>
+    <sink_block_id>blocks_char_to_float_0_0_0_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_tagged_stream_to_pdu_0</source_block_id>
-    <sink_block_id>fec_async_encoder_0</sink_block_id>
-    <source_key>pdus</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_pdu_to_tagged_stream_0</source_block_id>
-    <sink_block_id>digital_map_bb_0</sink_block_id>
+    <source_block_id>blocks_repack_bits_bb_0_0</source_block_id>
+    <sink_block_id>blocks_char_to_float_0_1_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_char_to_float_0_1</source_block_id>
-    <sink_block_id>blocks_tagged_stream_to_pdu_1</sink_block_id>
+    <source_block_id>blocks_repack_bits_bb_0_0</source_block_id>
+    <sink_block_id>blocks_tagged_stream_to_pdu_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_char_to_float_0_0_0_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_0</sink_block_id>
+    <source_block_id>blocks_stream_to_tagged_stream_0_0</source_block_id>
+    <sink_block_id>blocks_repack_bits_bb_0_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_repack_bits_bb_0_0</source_block_id>
-    <sink_block_id>blocks_char_to_float_0_1_0</sink_block_id>
+    <source_block_id>blocks_tagged_stream_to_pdu_0</source_block_id>
+    <sink_block_id>fec_async_encoder_0</sink_block_id>
+    <source_key>pdus</source_key>
+    <sink_key>in</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>blocks_tagged_stream_to_pdu_1</source_block_id>
+    <sink_block_id>fec_async_decoder_0</sink_block_id>
+    <source_key>pdus</source_key>
+    <sink_key>in</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>blocks_throttle_0</source_block_id>
+    <sink_block_id>blocks_stream_to_tagged_stream_0_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_char_to_float_0_1_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_0</sink_block_id>
+    <source_block_id>blocks_vector_source_x_0_1_0</source_block_id>
+    <sink_block_id>blocks_throttle_0</sink_block_id>
     <source_key>0</source_key>
-    <sink_key>1</sink_key>
+    <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_pdu_to_tagged_stream_0_0</source_block_id>
-    <sink_block_id>blocks_char_to_float_0_0_0_0</sink_block_id>
+    <source_block_id>digital_map_bb_0</source_block_id>
+    <sink_block_id>blocks_char_to_float_0_1</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_tagged_stream_to_pdu_1</source_block_id>
-    <sink_block_id>fec_async_decoder_0</sink_block_id>
-    <source_key>pdus</source_key>
-    <sink_key>in</sink_key>
+    <source_block_id>fec_async_decoder_0</source_block_id>
+    <sink_block_id>blocks_pdu_to_tagged_stream_0_0</sink_block_id>
+    <source_key>out</source_key>
+    <sink_key>pdus</sink_key>
   </connection>
   <connection>
     <source_block_id>fec_async_encoder_0</source_block_id>
@@ -2144,10 +2267,4 @@
     <source_key>out</source_key>
     <sink_key>pdus</sink_key>
   </connection>
-  <connection>
-    <source_block_id>blocks_char_to_float_0_1</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_1</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
 </flow_graph>
diff --git a/gr-fec/examples/fecapi_async_encoders.grc 
b/gr-fec/examples/fecapi_async_encoders.grc
index 3dd0d0f..d0cef07 100644
--- a/gr-fec/examples/fecapi_async_encoders.grc
+++ b/gr-fec/examples/fecapi_async_encoders.grc
@@ -1,26 +1,15 @@
-<?xml version='1.0' encoding='ASCII'?>
+<?xml version='1.0' encoding='utf-8'?>
+<?grc format='1' created='3.7.8rc1'?>
 <flow_graph>
   <timestamp>Mon May 19 16:19:57 2014</timestamp>
   <block>
     <key>options</key>
     <param>
-      <key>id</key>
-      <value>fecapi_async_encoders</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>title</key>
-      <value></value>
-    </param>
-    <param>
       <key>author</key>
       <value></value>
     </param>
     <param>
-      <key>description</key>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
@@ -28,32 +17,20 @@
       <value>2000,2000</value>
     </param>
     <param>
-      <key>generate_options</key>
-      <value>qt_gui</value>
-    </param>
-    <param>
       <key>category</key>
       <value>Custom</value>
     </param>
     <param>
-      <key>run_options</key>
-      <value>prompt</value>
-    </param>
-    <param>
-      <key>run</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>max_nouts</key>
-      <value>0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>realtime_scheduling</key>
+      <key>description</key>
       <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
@@ -63,792 +40,905 @@
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>rate</value>
+      <key>generate_options</key>
+      <value>qt_gui</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>id</key>
+      <value>fecapi_async_encoders</value>
     </param>
     <param>
-      <key>value</key>
-      <value>2</value>
+      <key>max_nouts</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>realtime_scheduling</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(421, 102)</value>
+      <key>run_options</key>
+      <value>prompt</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>run</key>
+      <value>True</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>polys</value>
+      <key>thread_safe_setters</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>title</key>
+      <value></value>
     </param>
+  </block>
+  <block>
+    <key>variable_cc_encoder_def</key>
     <param>
-      <key>value</key>
-      <value>[109, 79]</value>
+      <key>padding</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(396, 166)</value>
+      <key>k</key>
+      <value>k</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>dim1</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>k</value>
+      <key>dim2</key>
+      <value>1</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>value</key>
-      <value>7</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
+      <key>framebits</key>
+      <value>8000</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(354, 102)</value>
+      <value>(489, 69)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>samp_rate</value>
+      <value>enc_cc</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>ndim</key>
+      <value>0</value>
     </param>
     <param>
-      <key>value</key>
-      <value>50000</value>
+      <key>polys</key>
+      <value>polys</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>rate</key>
+      <value>rate</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(10, 73)</value>
+      <key>state_start</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>mode</key>
+      <value>fec.CC_STREAMING</value>
     </param>
   </block>
   <block>
-    <key>parameter</key>
+    <key>variable_cc_encoder_def</key>
     <param>
-      <key>id</key>
-      <value>frame_size</value>
+      <key>padding</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>label</key>
-      <value>Frame Size</value>
+      <key>k</key>
+      <value>k</value>
     </param>
     <param>
-      <key>value</key>
-      <value>30</value>
+      <key>dim1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>type</key>
-      <value>intx</value>
+      <key>dim2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>short_id</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>framebits</key>
+      <value>8000</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(171, 11)</value>
+      <value>(378, 490)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>parameter</key>
     <param>
       <key>id</key>
-      <value>puncpat</value>
+      <value>enc_cc_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>ndim</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label</key>
-      <value></value>
+      <key>polys</key>
+      <value>polys</value>
     </param>
     <param>
-      <key>value</key>
-      <value>'11'</value>
+      <key>rate</key>
+      <value>rate</value>
     </param>
     <param>
-      <key>type</key>
-      <value>string</value>
+      <key>state_start</key>
+      <value>0</value>
     </param>
     <param>
-      <key>short_id</key>
-      <value></value>
+      <key>mode</key>
+      <value>fec.CC_STREAMING</value>
     </param>
+  </block>
+  <block>
+    <key>variable_dummy_encoder_def</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(282, 11)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>dim1</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_ctrlport_monitor_performance</key>
     <param>
-      <key>id</key>
-      <value>blocks_ctrlport_monitor_performance_0</value>
+      <key>dim2</key>
+      <value>1</value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>en</key>
       <value>True</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>framebits</key>
+      <value>8000</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(366, 10)</value>
+      <value>(686, 69)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_vector_source_x</key>
     <param>
       <key>id</key>
-      <value>blocks_vector_source_x_0_1_0</value>
+      <value>enc_dummy</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>ndim</key>
+      <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>variable_dummy_encoder_def</key>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>vector</key>
-      <value>(frame_size/15)*[0, 0, 1, 0, 3, 0, 7, 0, 15, 0, 31, 0, 63, 0, 
127]</value>
+      <key>dim1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>tags</key>
-      <value>[]</value>
+      <key>dim2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>repeat</key>
+      <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>framebits</key>
+      <value>8000</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(575, 490)</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>id</key>
+      <value>enc_dummy_0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>ndim</key>
       <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>variable_repetition_encoder_def</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>dim1</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>dim2</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>framebits</key>
+      <value>8000</value>
+    </param>
     <param>
       <key>_coordinate</key>
-      <value>(61, 140)</value>
+      <value>(686, 148)</value>
     </param>
     <param>
       <key>_rotation</key>
-      <value>180</value>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>enc_rep</value>
+    </param>
+    <param>
+      <key>ndim</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>rep</key>
+      <value>3</value>
     </param>
   </block>
   <block>
-    <key>blocks_pdu_to_tagged_stream</key>
+    <key>variable_repetition_encoder_def</key>
     <param>
-      <key>id</key>
-      <value>blocks_pdu_to_tagged_stream_0</value>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>dim1</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>dim2</key>
+      <value>1</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>framebits</key>
+      <value>8000</value>
     </param>
     <param>
-      <key>tag</key>
-      <value>pkt_len</value>
+      <key>_coordinate</key>
+      <value>(575, 570)</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>id</key>
+      <value>enc_rep_0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>ndim</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>rep</key>
+      <value>3</value>
+    </param>
+  </block>
+  <block>
+    <key>variable</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(577, 297)</value>
+      <value>(354, 102)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
+    <param>
+      <key>id</key>
+      <value>k</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>7</value>
+    </param>
   </block>
   <block>
-    <key>qtgui_time_sink_x</key>
+    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>qtgui_time_sink_x_0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>type</key>
-      <value>float</value>
+      <key>_coordinate</key>
+      <value>(396, 166)</value>
     </param>
     <param>
-      <key>name</key>
-      <value>QT GUI Plot</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>size</key>
-      <value>2048</value>
+      <key>id</key>
+      <value>polys</value>
     </param>
     <param>
-      <key>srate</key>
-      <value>1</value>
+      <key>value</key>
+      <value>[109, 79]</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>autoscale</key>
-      <value>False</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-1</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>2</value>
+      <key>_coordinate</key>
+      <value>(421, 102)</value>
     </param>
     <param>
-      <key>nconnections</key>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>rate</value>
+    </param>
+    <param>
+      <key>value</key>
       <value>2</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>update_time</key>
-      <value>0.01</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>entags</key>
+      <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>gui_hint</key>
+      <key>_coordinate</key>
+      <value>(10, 73)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>samp_rate</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>50000</value>
+    </param>
+  </block>
+  <block>
+    <key>analog_random_source_x</key>
+    <param>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>_enabled</key>
+      <value>False</value>
     </param>
     <param>
-      <key>tr_delay</key>
-      <value>0</value>
+      <key>_coordinate</key>
+      <value>(43, 436)</value>
     </param>
     <param>
-      <key>tr_chan</key>
+      <key>_rotation</key>
+      <value>180</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>analog_random_source_x_0</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>""</value>
+      <key>max</key>
+      <value>256</value>
     </param>
     <param>
-      <key>label1</key>
-      <value></value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width1</key>
-      <value>1</value>
+      <key>min</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>num_samps</key>
+      <value>1000</value>
     </param>
     <param>
-      <key>style1</key>
-      <value>1</value>
+      <key>type</key>
+      <value>byte</value>
     </param>
     <param>
-      <key>marker1</key>
-      <value>-1</value>
+      <key>repeat</key>
+      <value>True</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_char_to_float</key>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>label2</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>style2</key>
-      <value>1</value>
+      <key>_coordinate</key>
+      <value>(1034, 297)</value>
     </param>
     <param>
-      <key>marker2</key>
-      <value>-1</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>0.6</value>
+      <key>id</key>
+      <value>blocks_char_to_float_0_1</value>
     </param>
     <param>
-      <key>label3</key>
-      <value>Rep. (Rate=3)</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>scale</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style3</key>
+      <key>vlen</key>
       <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_char_to_float</key>
     <param>
-      <key>marker3</key>
-      <value>-1</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>label4</key>
-      <value>CC (K=7, Rate=2)</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>_coordinate</key>
+      <value>(950, 400)</value>
     </param>
     <param>
-      <key>style4</key>
-      <value>1</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>marker4</key>
-      <value>-1</value>
+      <key>id</key>
+      <value>blocks_char_to_float_1</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label5</key>
-      <value>CCSDS</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width5</key>
+      <key>scale</key>
       <value>1</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_ctrlport_monitor_performance</key>
     <param>
-      <key>style5</key>
-      <value>1</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>marker5</key>
-      <value>-1</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>_enabled</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label6</key>
-      <value></value>
+      <key>en</key>
+      <value>True</value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>_coordinate</key>
+      <value>(366, 10)</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style6</key>
-      <value>1</value>
+      <key>id</key>
+      <value>blocks_ctrlport_monitor_performance_0</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_pdu_to_tagged_stream</key>
     <param>
-      <key>marker6</key>
-      <value>-1</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>label7</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>_coordinate</key>
+      <value>(577, 297)</value>
     </param>
     <param>
-      <key>style7</key>
-      <value>1</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>marker7</key>
-      <value>-1</value>
+      <key>id</key>
+      <value>blocks_pdu_to_tagged_stream_0</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>type</key>
+      <value>byte</value>
     </param>
     <param>
-      <key>label8</key>
-      <value></value>
+      <key>tag</key>
+      <value>pkt_len</value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+  </block>
+  <block>
+    <key>blocks_repack_bits_bb</key>
+    <param>
+      <key>k</key>
+      <value>8</value>
     </param>
     <param>
-      <key>style8</key>
+      <key>l</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker8</key>
-      <value>-1</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>label9</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>endianness</key>
+      <value>gr.GR_LSB_FIRST</value>
     </param>
     <param>
-      <key>style9</key>
-      <value>1</value>
+      <key>_coordinate</key>
+      <value>(804, 273)</value>
     </param>
     <param>
-      <key>marker9</key>
-      <value>-1</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>id</key>
+      <value>blocks_repack_bits_bb_0</value>
     </param>
     <param>
-      <key>label10</key>
-      <value></value>
+      <key>len_tag_key</key>
+      <value>pkt_len</value>
     </param>
     <param>
-      <key>width10</key>
-      <value>1</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"blue"</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style10</key>
-      <value>1</value>
+      <key>align_output</key>
+      <value>True</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_repack_bits_bb</key>
     <param>
-      <key>marker10</key>
-      <value>-1</value>
+      <key>k</key>
+      <value>8</value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>l</key>
+      <value>1</value>
     </param>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>endianness</key>
+      <value>gr.GR_LSB_FIRST</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1226, 359)</value>
+      <value>(331, 376)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_char_to_float</key>
     <param>
       <key>id</key>
-      <value>blocks_char_to_float_1</value>
+      <value>blocks_repack_bits_bb_0_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>len_tag_key</key>
+      <value>pkt_len</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>scale</key>
-      <value>1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>align_output</key>
+      <value>False</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_stream_to_tagged_stream</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(950, 400)</value>
+      <value>(58, 273)</value>
     </param>
     <param>
       <key>_rotation</key>
-      <value>0</value>
+      <value>180</value>
     </param>
-  </block>
-  <block>
-    <key>analog_random_source_x</key>
     <param>
       <key>id</key>
-      <value>analog_random_source_x_0</value>
+      <value>blocks_stream_to_tagged_stream_0_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>False</value>
+      <key>len_tag_key</key>
+      <value>pkt_len</value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>min</key>
+      <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>max</key>
-      <value>256</value>
+      <key>packet_len</key>
+      <value>frame_size</value>
     </param>
     <param>
-      <key>num_samps</key>
-      <value>1000</value>
+      <key>type</key>
+      <value>byte</value>
     </param>
     <param>
-      <key>repeat</key>
-      <value>True</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_tagged_stream_to_pdu</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(43, 436)</value>
+      <value>(100, 345)</value>
     </param>
     <param>
       <key>_rotation</key>
-      <value>180</value>
+      <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_throttle</key>
     <param>
       <key>id</key>
-      <value>blocks_throttle_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>blocks_tagged_stream_to_pdu_0</value>
     </param>
     <param>
       <key>type</key>
       <value>byte</value>
     </param>
     <param>
-      <key>samples_per_second</key>
-      <value>samp_rate</value>
+      <key>tag</key>
+      <value>pkt_len</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ignoretag</key>
-      <value>True</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_throttle</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
@@ -858,679 +948,666 @@
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_stream_to_tagged_stream</key>
     <param>
       <key>id</key>
-      <value>blocks_stream_to_tagged_stream_0_0</value>
+      <value>blocks_throttle_0</value>
     </param>
     <param>
-      <key>_enabled</key>
+      <key>ignoretag</key>
       <value>True</value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>packet_len</key>
-      <value>frame_size</value>
+      <key>samples_per_second</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>len_tag_key</key>
-      <value>pkt_len</value>
+      <key>type</key>
+      <value>byte</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_vector_source_x</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(58, 273)</value>
+      <value>(61, 140)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>180</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_tagged_stream_to_pdu</key>
     <param>
       <key>id</key>
-      <value>blocks_tagged_stream_to_pdu_0</value>
+      <value>blocks_vector_source_x_0_1_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
       <key>type</key>
       <value>byte</value>
     </param>
     <param>
-      <key>tag</key>
-      <value>pkt_len</value>
+      <key>repeat</key>
+      <value>True</value>
     </param>
     <param>
+      <key>tags</key>
+      <value>[]</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>vector</key>
+      <value>(frame_size/15)*[0, 0, 1, 0, 3, 0, 7, 0, 15, 0, 31, 0, 63, 0, 
127]</value>
+    </param>
+  </block>
+  <block>
+    <key>fec_async_encoder</key>
+    <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>encoder</key>
+      <value>enc_cc</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(100, 345)</value>
+      <value>(349, 296)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_cc_encoder_def</key>
     <param>
       <key>id</key>
-      <value>enc_cc_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <value>fec_async_encoder_0</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>packed</key>
+      <value>False</value>
     </param>
     <param>
-      <key>k</key>
-      <value>k</value>
+      <key>rev_pack</key>
+      <value>True</value>
     </param>
     <param>
-      <key>rate</key>
-      <value>rate</value>
+      <key>rev_unpack</key>
+      <value>True</value>
     </param>
+  </block>
+  <block>
+    <key>fec_extended_tagged_encoder</key>
     <param>
-      <key>polys</key>
-      <value>polys</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>state_start</key>
-      <value>0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>mode</key>
-      <value>fec.CC_STREAMING</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>padding</key>
-      <value>False</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>encoder_list</key>
+      <value>enc_cc</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(378, 490)</value>
+      <value>(553, 384)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_dummy_encoder_def</key>
     <param>
       <key>id</key>
-      <value>enc_dummy_0</value>
+      <value>fec_extended_tagged_encoder_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>lentagname</key>
+      <value>pkt_len</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>puncpat</key>
+      <value>puncpat</value>
     </param>
+  </block>
+  <block>
+    <key>parameter</key>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(575, 490)</value>
+      <value>(171, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_repetition_encoder_def</key>
     <param>
       <key>id</key>
-      <value>enc_rep_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>frame_size</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>label</key>
+      <value>Frame Size</value>
     </param>
     <param>
-      <key>ndim</key>
-      <value>0</value>
+      <key>short_id</key>
+      <value></value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>type</key>
+      <value>intx</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>value</key>
+      <value>30</value>
     </param>
+  </block>
+  <block>
+    <key>parameter</key>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>rep</key>
-      <value>3</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(575, 570)</value>
+      <value>(282, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_repetition_encoder_def</key>
     <param>
       <key>id</key>
-      <value>enc_rep</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>puncpat</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>label</key>
+      <value></value>
     </param>
     <param>
-      <key>ndim</key>
-      <value>0</value>
+      <key>short_id</key>
+      <value></value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>type</key>
+      <value>string</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>value</key>
+      <value>'11'</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_time_sink_x</key>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
-      <key>rep</key>
-      <value>3</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(686, 148)</value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>variable_cc_encoder_def</key>
     <param>
-      <key>id</key>
-      <value>enc_cc</value>
+      <key>entags</key>
+      <value>True</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>_coordinate</key>
+      <value>(1224, 355)</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>gui_hint</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>id</key>
+      <value>qtgui_time_sink_x_0</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>legend</key>
+      <value>True</value>
     </param>
     <param>
-      <key>k</key>
-      <value>k</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>rate</key>
-      <value>rate</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>polys</key>
-      <value>polys</value>
+      <key>label1</key>
+      <value></value>
     </param>
     <param>
-      <key>state_start</key>
-      <value>0</value>
+      <key>marker1</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>mode</key>
-      <value>fec.CC_STREAMING</value>
+      <key>style1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>padding</key>
-      <value>False</value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(489, 69)</value>
+      <key>color10</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>label10</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>variable_dummy_encoder_def</key>
     <param>
-      <key>id</key>
-      <value>enc_dummy</value>
+      <key>marker10</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>style10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>ndim</key>
-      <value>0</value>
+      <key>alpha2</key>
+      <value>0.6</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>label2</key>
+      <value></value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>marker2</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>style2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(686, 69)</value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
-  </block>
-  <block>
-    <key>fec_async_encoder</key>
     <param>
-      <key>id</key>
-      <value>fec_async_encoder_0</value>
+      <key>color3</key>
+      <value>"green"</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label3</key>
+      <value>Rep. (Rate=3)</value>
     </param>
     <param>
-      <key>encoder</key>
-      <value>enc_cc</value>
+      <key>marker3</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>packed</key>
-      <value>False</value>
+      <key>style3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>rev_unpack</key>
-      <value>True</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>rev_pack</key>
-      <value>True</value>
+      <key>alpha4</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>label4</key>
+      <value>CC (K=7, Rate=2)</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>marker4</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>style4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(349, 296)</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_repack_bits_bb</key>
     <param>
-      <key>id</key>
-      <value>blocks_repack_bits_bb_0</value>
+      <key>label5</key>
+      <value>CCSDS</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>marker5</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>k</key>
-      <value>8</value>
+      <key>style5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>l</key>
+      <key>width5</key>
       <value>1</value>
     </param>
     <param>
-      <key>len_tag_key</key>
-      <value>pkt_len</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>align_output</key>
-      <value>True</value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>label6</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>marker6</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>style6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(804, 273)</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_char_to_float</key>
     <param>
-      <key>id</key>
-      <value>blocks_char_to_float_0_1</value>
+      <key>label7</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>marker7</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>vlen</key>
+      <key>style7</key>
       <value>1</value>
     </param>
     <param>
-      <key>scale</key>
+      <key>width7</key>
       <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>label8</key>
+      <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1034, 297)</value>
+      <key>marker8</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>style8</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_repack_bits_bb</key>
     <param>
-      <key>id</key>
-      <value>blocks_repack_bits_bb_0_0</value>
+      <key>width8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>k</key>
-      <value>8</value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
     <param>
-      <key>l</key>
-      <value>1</value>
+      <key>label9</key>
+      <value></value>
     </param>
     <param>
-      <key>len_tag_key</key>
-      <value>pkt_len</value>
+      <key>marker9</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>align_output</key>
-      <value>False</value>
+      <key>style9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>width9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>name</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>nconnections</key>
+      <value>2</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>size</key>
+      <value>2048</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(331, 376)</value>
+      <key>srate</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>tr_chan</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>fec_extended_tagged_encoder</key>
     <param>
-      <key>id</key>
-      <value>fec_extended_tagged_encoder_0</value>
+      <key>tr_delay</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>encoder_list</key>
-      <value>enc_cc</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
     </param>
     <param>
-      <key>puncpat</key>
-      <value>puncpat</value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
     <param>
-      <key>lentagname</key>
-      <value>pkt_len</value>
+      <key>tr_tag</key>
+      <value>""</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>type</key>
+      <value>float</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>update_time</key>
+      <value>0.01</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>ylabel</key>
+      <value>Amplitude</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>yunit</key>
+      <value>""</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(553, 384)</value>
+      <key>ymax</key>
+      <value>2</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>ymin</key>
+      <value>-1</value>
     </param>
   </block>
   <connection>
-    <source_block_id>blocks_vector_source_x_0_1_0</source_block_id>
+    <source_block_id>analog_random_source_x_0</source_block_id>
     <sink_block_id>blocks_throttle_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>analog_random_source_x_0</source_block_id>
-    <sink_block_id>blocks_throttle_0</sink_block_id>
+    <source_block_id>blocks_char_to_float_0_1</source_block_id>
+    <sink_block_id>qtgui_time_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_throttle_0</source_block_id>
-    <sink_block_id>blocks_stream_to_tagged_stream_0_0</sink_block_id>
+    <source_block_id>blocks_char_to_float_1</source_block_id>
+    <sink_block_id>qtgui_time_sink_x_0</sink_block_id>
     <source_key>0</source_key>
-    <sink_key>0</sink_key>
+    <sink_key>1</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_stream_to_tagged_stream_0_0</source_block_id>
-    <sink_block_id>blocks_tagged_stream_to_pdu_0</sink_block_id>
+    <source_block_id>blocks_pdu_to_tagged_stream_0</source_block_id>
+    <sink_block_id>blocks_repack_bits_bb_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
@@ -1541,14 +1618,8 @@
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_tagged_stream_to_pdu_0</source_block_id>
-    <sink_block_id>fec_async_encoder_0</sink_block_id>
-    <source_key>pdus</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_char_to_float_0_1</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_0</sink_block_id>
+    <source_block_id>blocks_repack_bits_bb_0_0</source_block_id>
+    <sink_block_id>fec_extended_tagged_encoder_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
@@ -1559,28 +1630,28 @@
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_pdu_to_tagged_stream_0</source_block_id>
-    <sink_block_id>blocks_repack_bits_bb_0</sink_block_id>
+    <source_block_id>blocks_stream_to_tagged_stream_0_0</source_block_id>
+    <sink_block_id>blocks_tagged_stream_to_pdu_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_repack_bits_bb_0_0</source_block_id>
-    <sink_block_id>fec_extended_tagged_encoder_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
+    <source_block_id>blocks_tagged_stream_to_pdu_0</source_block_id>
+    <sink_block_id>fec_async_encoder_0</sink_block_id>
+    <source_key>pdus</source_key>
+    <sink_key>in</sink_key>
   </connection>
   <connection>
-    <source_block_id>fec_extended_tagged_encoder_0</source_block_id>
-    <sink_block_id>blocks_char_to_float_1</sink_block_id>
+    <source_block_id>blocks_throttle_0</source_block_id>
+    <sink_block_id>blocks_stream_to_tagged_stream_0_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_char_to_float_1</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_0</sink_block_id>
+    <source_block_id>blocks_vector_source_x_0_1_0</source_block_id>
+    <sink_block_id>blocks_throttle_0</sink_block_id>
     <source_key>0</source_key>
-    <sink_key>1</sink_key>
+    <sink_key>0</sink_key>
   </connection>
   <connection>
     <source_block_id>fec_async_encoder_0</source_block_id>
@@ -1588,4 +1659,10 @@
     <source_key>out</source_key>
     <sink_key>pdus</sink_key>
   </connection>
+  <connection>
+    <source_block_id>fec_extended_tagged_encoder_0</source_block_id>
+    <sink_block_id>blocks_char_to_float_1</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
 </flow_graph>
diff --git a/gr-fec/examples/fecapi_async_to_stream.grc 
b/gr-fec/examples/fecapi_async_to_stream.grc
index 78a6e50..035b572 100644
--- a/gr-fec/examples/fecapi_async_to_stream.grc
+++ b/gr-fec/examples/fecapi_async_to_stream.grc
@@ -1,22 +1,27 @@
-<?xml version='1.0' encoding='ASCII'?>
+<?xml version='1.0' encoding='utf-8'?>
+<?grc format='1' created='3.7.8rc1'?>
 <flow_graph>
   <timestamp>Tue May 20 15:21:44 2014</timestamp>
   <block>
     <key>options</key>
     <param>
-      <key>id</key>
-      <value>fecapi_async_decoders</value>
+      <key>author</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>title</key>
-      <value></value>
+      <key>window_size</key>
+      <value>2000,2000</value>
     </param>
     <param>
-      <key>author</key>
+      <key>category</key>
+      <value>Custom</value>
+    </param>
+    <param>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
@@ -24,24 +29,24 @@
       <value></value>
     </param>
     <param>
-      <key>window_size</key>
-      <value>2000,2000</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>generate_options</key>
-      <value>qt_gui</value>
+      <key>_coordinate</key>
+      <value>(10, 10)</value>
     </param>
     <param>
-      <key>category</key>
-      <value>Custom</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>run_options</key>
-      <value>prompt</value>
+      <key>generate_options</key>
+      <value>qt_gui</value>
     </param>
     <param>
-      <key>run</key>
-      <value>True</value>
+      <key>id</key>
+      <value>fecapi_async_decoders</value>
     </param>
     <param>
       <key>max_nouts</key>
@@ -52,648 +57,641 @@
       <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>run_options</key>
+      <value>prompt</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(10, 10)</value>
+      <key>run</key>
+      <value>True</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>thread_safe_setters</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>samp_rate</value>
+      <key>title</key>
+      <value></value>
     </param>
+  </block>
+  <block>
+    <key>variable_cc_decoder_def</key>
     <param>
-      <key>_enabled</key>
+      <key>padding</key>
       <value>True</value>
     </param>
     <param>
-      <key>value</key>
-      <value>50000</value>
-    </param>
-    <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(10, 73)</value>
+      <key>k</key>
+      <value>k</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>dim1</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>k</value>
+      <key>dim2</key>
+      <value>4</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>value</key>
-      <value>7</value>
+      <key>state_end</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>framebits</key>
+      <value>8000</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(264, 535)</value>
+      <value>(400, 684)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>polys</value>
+      <value>dec_cc</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>value</key>
+      <value>"ok"</value>
     </param>
     <param>
-      <key>value</key>
-      <value>[109, 79]</value>
+      <key>ndim</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>polys</key>
+      <value>polys</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(308, 600)</value>
+      <key>rate</key>
+      <value>rate</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>state_start</key>
       <value>0</value>
     </param>
+    <param>
+      <key>mode</key>
+      <value>fec.CC_TERMINATED</value>
+    </param>
   </block>
   <block>
-    <key>variable</key>
+    <key>variable_dummy_decoder_def</key>
     <param>
-      <key>id</key>
-      <value>rate</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>dim1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>value</key>
-      <value>2</value>
+      <key>dim2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>framebits</key>
+      <value>8000</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(332, 536)</value>
+      <value>(598, 588)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>parameter</key>
     <param>
       <key>id</key>
-      <value>frame_size</value>
+      <value>dec_dummy</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>value</key>
+      <value>"ok"</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Frame Size</value>
+      <key>ndim</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>variable_repetition_decoder_def</key>
     <param>
-      <key>value</key>
-      <value>30</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>type</key>
-      <value>intx</value>
+      <key>dim1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>short_id</key>
-      <value></value>
+      <key>dim2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>framebits</key>
+      <value>8000</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(171, 11)</value>
+      <value>(782, 603)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>parameter</key>
     <param>
       <key>id</key>
-      <value>puncpat</value>
+      <value>dec_rep</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>value</key>
+      <value>"ok"</value>
     </param>
     <param>
-      <key>label</key>
-      <value></value>
+      <key>ndim</key>
+      <value>1</value>
     </param>
     <param>
-      <key>value</key>
-      <value>'11'</value>
+      <key>rep</key>
+      <value>3</value>
     </param>
     <param>
-      <key>type</key>
-      <value>string</value>
+      <key>prob</key>
+      <value>0.5</value>
     </param>
+  </block>
+  <block>
+    <key>variable_cc_encoder_def</key>
     <param>
-      <key>short_id</key>
-      <value></value>
+      <key>padding</key>
+      <value>True</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(282, 11)</value>
+      <key>k</key>
+      <value>k</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>dim1</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_ctrlport_monitor_performance</key>
     <param>
-      <key>id</key>
-      <value>blocks_ctrlport_monitor_performance_0</value>
+      <key>dim2</key>
+      <value>1</value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>en</key>
       <value>True</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>framebits</key>
+      <value>8000</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(366, 10)</value>
+      <value>(401, 510)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_vector_source_x</key>
     <param>
       <key>id</key>
-      <value>blocks_vector_source_x_0_1_0</value>
+      <value>enc_cc</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>ndim</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>polys</key>
+      <value>polys</value>
     </param>
     <param>
-      <key>vector</key>
-      <value>(frame_size/15)*[0, 0, 1, 0, 3, 0, 7, 0, 15, 0, 31, 0, 63, 0, 
127]</value>
+      <key>rate</key>
+      <value>rate</value>
     </param>
     <param>
-      <key>tags</key>
-      <value>[]</value>
+      <key>state_start</key>
+      <value>0</value>
     </param>
     <param>
-      <key>repeat</key>
-      <value>True</value>
+      <key>mode</key>
+      <value>fec.CC_TERMINATED</value>
     </param>
+  </block>
+  <block>
+    <key>variable_dummy_encoder_def</key>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>dim1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>dim2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>framebits</key>
+      <value>8000</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(61, 140)</value>
+      <value>(598, 509)</value>
     </param>
     <param>
       <key>_rotation</key>
-      <value>180</value>
+      <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_throttle</key>
     <param>
       <key>id</key>
-      <value>blocks_throttle_0</value>
+      <value>enc_dummy</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>ndim</key>
+      <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>variable_repetition_encoder_def</key>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>samples_per_second</key>
-      <value>samp_rate</value>
+      <key>dim1</key>
+      <value>4</value>
     </param>
     <param>
-      <key>vlen</key>
+      <key>dim2</key>
       <value>1</value>
     </param>
     <param>
-      <key>ignoretag</key>
+      <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>framebits</key>
+      <value>8000</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(780, 509)</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>id</key>
+      <value>enc_rep</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(109, 224)</value>
+      <key>ndim</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>rep</key>
+      <value>3</value>
     </param>
   </block>
   <block>
-    <key>blocks_stream_to_tagged_stream</key>
+    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>blocks_stream_to_tagged_stream_0_0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>_coordinate</key>
+      <value>(264, 535)</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>packet_len</key>
-      <value>frame_size</value>
+      <key>id</key>
+      <value>k</value>
     </param>
     <param>
-      <key>len_tag_key</key>
-      <value>pkt_len</value>
+      <key>value</key>
+      <value>7</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>_coordinate</key>
+      <value>(308, 600)</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(83, 279)</value>
+      <key>id</key>
+      <value>polys</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>180</value>
+      <key>value</key>
+      <value>[109, 79]</value>
     </param>
   </block>
   <block>
-    <key>blocks_tagged_stream_to_pdu</key>
+    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>blocks_tagged_stream_to_pdu_0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>_coordinate</key>
+      <value>(332, 536)</value>
     </param>
     <param>
-      <key>tag</key>
-      <value>pkt_len</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>id</key>
+      <value>rate</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>value</key>
+      <value>2</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(83, 369)</value>
+      <value>(10, 73)</value>
     </param>
     <param>
       <key>_rotation</key>
-      <value>180</value>
+      <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_crc32_async_bb</key>
     <param>
       <key>id</key>
-      <value>digital_crc32_async_bb_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>check</key>
-      <value>False</value>
+      <key>value</key>
+      <value>50000</value>
     </param>
+  </block>
+  <block>
+    <key>analog_random_source_x</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>False</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(101, 441)</value>
+      <value>(50, 502)</value>
     </param>
     <param>
       <key>_rotation</key>
-      <value>0</value>
+      <value>180</value>
     </param>
-  </block>
-  <block>
-    <key>analog_random_source_x</key>
     <param>
       <key>id</key>
       <value>analog_random_source_x_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>False</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>max</key>
+      <value>256</value>
     </param>
     <param>
-      <key>min</key>
+      <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>max</key>
-      <value>256</value>
+      <key>min</key>
+      <value>0</value>
     </param>
     <param>
       <key>num_samps</key>
       <value>1000</value>
     </param>
     <param>
+      <key>type</key>
+      <value>byte</value>
+    </param>
+    <param>
       <key>repeat</key>
       <value>True</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_char_to_float</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(50, 502)</value>
+      <value>(1200, 191)</value>
     </param>
     <param>
       <key>_rotation</key>
-      <value>180</value>
+      <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_map_bb</key>
     <param>
       <key>id</key>
-      <value>digital_map_bb_0</value>
+      <value>blocks_char_to_float_0_0_0_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>map</key>
-      <value>[-1,1]</value>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>scale</key>
+      <value>1</value>
     </param>
     <param>
+      <key>vlen</key>
+      <value>1</value>
+    </param>
+  </block>
+  <block>
+    <key>blocks_char_to_float</key>
+    <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(713, 279)</value>
+      <value>(707, 188)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_repack_bits_bb</key>
     <param>
       <key>id</key>
-      <value>blocks_repack_bits_bb_0</value>
+      <value>blocks_char_to_float_0_1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>k</key>
-      <value>8</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>l</key>
+      <key>scale</key>
       <value>1</value>
     </param>
     <param>
-      <key>len_tag_key</key>
-      <value>pkt_len</value>
-    </param>
-    <param>
-      <key>align_output</key>
-      <value>False</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_ctrlport_monitor_performance</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>False</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>en</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(452, 354)</value>
+      <value>(366, 10)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_pdu_to_tagged_stream</key>
     <param>
       <key>id</key>
-      <value>blocks_pdu_to_tagged_stream_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>byte</value>
-    </param>
-    <param>
-      <key>tag</key>
-      <value>pkt_len</value>
+      <value>blocks_ctrlport_monitor_performance_0</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_pdu_to_tagged_stream</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
@@ -703,1378 +701,1509 @@
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_dummy_encoder_def</key>
     <param>
       <key>id</key>
-      <value>enc_dummy</value>
+      <value>blocks_pdu_to_tagged_stream_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>type</key>
+      <value>byte</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>tag</key>
+      <value>pkt_len</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+  </block>
+  <block>
+    <key>blocks_repack_bits_bb</key>
+    <param>
+      <key>k</key>
+      <value>8</value>
     </param>
     <param>
-      <key>dim2</key>
+      <key>l</key>
       <value>1</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>endianness</key>
+      <value>gr.GR_LSB_FIRST</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(598, 509)</value>
+      <value>(452, 354)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_dummy_decoder_def</key>
     <param>
       <key>id</key>
-      <value>dec_dummy</value>
+      <value>blocks_repack_bits_bb_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>len_tag_key</key>
+      <value>pkt_len</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ndim</key>
-      <value>1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>align_output</key>
+      <value>False</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_repack_bits_bb</key>
     <param>
-      <key>dim2</key>
+      <key>k</key>
       <value>1</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>l</key>
+      <value>8</value>
     </param>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>endianness</key>
+      <value>gr.GR_LSB_FIRST</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(598, 588)</value>
+      <value>(925, 309)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_repetition_encoder_def</key>
     <param>
       <key>id</key>
-      <value>enc_rep</value>
+      <value>blocks_repack_bits_bb_0_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>len_tag_key</key>
+      <value>pkt_len</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>4</value>
+      <key>align_output</key>
+      <value>False</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_stream_to_tagged_stream</key>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>rep</key>
-      <value>3</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(780, 509)</value>
+      <value>(83, 279)</value>
     </param>
     <param>
       <key>_rotation</key>
-      <value>0</value>
+      <value>180</value>
     </param>
-  </block>
-  <block>
-    <key>variable_repetition_decoder_def</key>
     <param>
       <key>id</key>
-      <value>dec_rep</value>
+      <value>blocks_stream_to_tagged_stream_0_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>len_tag_key</key>
+      <value>pkt_len</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ndim</key>
-      <value>1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>packet_len</key>
+      <value>frame_size</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>type</key>
+      <value>byte</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_tagged_stream_to_pdu</key>
     <param>
-      <key>rep</key>
-      <value>3</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>prob</key>
-      <value>0.5</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(782, 603)</value>
+      <value>(83, 369)</value>
     </param>
     <param>
       <key>_rotation</key>
-      <value>0</value>
+      <value>180</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_time_sink_x</key>
     <param>
       <key>id</key>
-      <value>qtgui_time_sink_x_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>blocks_tagged_stream_to_pdu_0</value>
     </param>
     <param>
       <key>type</key>
-      <value>float</value>
+      <value>byte</value>
     </param>
     <param>
-      <key>name</key>
-      <value></value>
+      <key>tag</key>
+      <value>pkt_len</value>
     </param>
     <param>
-      <key>size</key>
-      <value>512</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>srate</key>
-      <value>samp_rate</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_throttle</key>
     <param>
-      <key>autoscale</key>
-      <value>False</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-1</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>140</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>nconnections</key>
-      <value>1</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.01</value>
+      <key>_coordinate</key>
+      <value>(109, 224)</value>
     </param>
     <param>
-      <key>entags</key>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>blocks_throttle_0</value>
+    </param>
+    <param>
+      <key>ignoretag</key>
       <value>True</value>
     </param>
     <param>
-      <key>gui_hint</key>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>samples_per_second</key>
+      <value>samp_rate</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>byte</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
+    </param>
+  </block>
+  <block>
+    <key>blocks_vector_source_x</key>
+    <param>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>tr_delay</key>
+      <key>_coordinate</key>
+      <value>(61, 140)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>180</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>blocks_vector_source_x_0_1_0</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>tr_chan</key>
+      <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>""</value>
+      <key>type</key>
+      <value>byte</value>
     </param>
     <param>
-      <key>label1</key>
-      <value>Input</value>
+      <key>repeat</key>
+      <value>True</value>
     </param>
     <param>
-      <key>width1</key>
+      <key>tags</key>
+      <value>[]</value>
+    </param>
+    <param>
+      <key>vlen</key>
       <value>1</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>vector</key>
+      <value>(frame_size/15)*[0, 0, 1, 0, 3, 0, 7, 0, 15, 0, 31, 0, 63, 0, 
127]</value>
     </param>
+  </block>
+  <block>
+    <key>digital_crc32_async_bb</key>
     <param>
-      <key>style1</key>
-      <value>1</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>marker1</key>
-      <value>-1</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>label2</key>
-      <value>Dummy</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>_coordinate</key>
+      <value>(101, 441)</value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style2</key>
-      <value>1</value>
+      <key>id</key>
+      <value>digital_crc32_async_bb_0</value>
     </param>
     <param>
-      <key>marker2</key>
-      <value>-1</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>0.6</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label3</key>
-      <value>Rep. (Rate=3)</value>
+      <key>check</key>
+      <value>False</value>
     </param>
+  </block>
+  <block>
+    <key>digital_crc32_bb</key>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>style3</key>
-      <value>1</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>marker3</key>
-      <value>-1</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>_coordinate</key>
+      <value>(1214, 332)</value>
     </param>
     <param>
-      <key>label4</key>
-      <value>CC (K=7, Rate=2)</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>id</key>
+      <value>digital_crc32_bb_0</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>lengthtagname</key>
+      <value>pkt_len</value>
     </param>
     <param>
-      <key>style4</key>
-      <value>1</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>marker4</key>
-      <value>-1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>check</key>
+      <value>True</value>
     </param>
     <param>
-      <key>label5</key>
-      <value>CCSDS</value>
+      <key>packed</key>
+      <value>True</value>
     </param>
+  </block>
+  <block>
+    <key>digital_map_bb</key>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>style5</key>
-      <value>1</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>marker5</key>
-      <value>-1</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>_coordinate</key>
+      <value>(713, 279)</value>
     </param>
     <param>
-      <key>label6</key>
-      <value></value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>id</key>
+      <value>digital_map_bb_0</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
+      <key>map</key>
+      <value>[-1,1]</value>
     </param>
     <param>
-      <key>style6</key>
-      <value>1</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>marker6</key>
-      <value>-1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>fec_async_encoder</key>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>label7</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>style7</key>
-      <value>1</value>
+      <key>encoder</key>
+      <value>enc_cc</value>
     </param>
     <param>
-      <key>marker7</key>
-      <value>-1</value>
+      <key>_coordinate</key>
+      <value>(429, 148)</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label8</key>
-      <value></value>
+      <key>id</key>
+      <value>fec_async_encoder_0</value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style8</key>
-      <value>1</value>
+      <key>packed</key>
+      <value>True</value>
     </param>
     <param>
-      <key>marker8</key>
-      <value>-1</value>
+      <key>rev_pack</key>
+      <value>True</value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>rev_unpack</key>
+      <value>True</value>
     </param>
+  </block>
+  <block>
+    <key>fec_extended_tagged_decoder</key>
     <param>
-      <key>label9</key>
+      <key>ann</key>
+      <value>None</value>
+    </param>
+    <param>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>style9</key>
-      <value>1</value>
+      <key>decoder_list</key>
+      <value>dec_cc</value>
     </param>
     <param>
-      <key>marker9</key>
-      <value>-1</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>_coordinate</key>
+      <value>(875, 164)</value>
     </param>
     <param>
-      <key>label10</key>
-      <value></value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width10</key>
-      <value>1</value>
+      <key>id</key>
+      <value>fec_extended_tagged_decoder_0</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"blue"</value>
+      <key>lentagname</key>
+      <value>pkt_len</value>
     </param>
     <param>
-      <key>style10</key>
-      <value>1</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>marker10</key>
-      <value>-1</value>
+      <key>puncpat</key>
+      <value>puncpat</value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>value</key>
+      <value>fec_extended_decoder</value>
     </param>
+  </block>
+  <block>
+    <key>parameter</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(1364, 167)</value>
+      <value>(171, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_char_to_float</key>
     <param>
       <key>id</key>
-      <value>blocks_char_to_float_0_1</value>
+      <value>frame_size</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label</key>
+      <value>Frame Size</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>short_id</key>
+      <value></value>
     </param>
     <param>
-      <key>scale</key>
-      <value>1</value>
+      <key>type</key>
+      <value>intx</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>value</key>
+      <value>30</value>
     </param>
+  </block>
+  <block>
+    <key>parameter</key>
     <param>
-      <key>affinity</key>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(707, 188)</value>
+      <value>(282, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_time_sink_x</key>
     <param>
       <key>id</key>
-      <value>qtgui_time_sink_x_0_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>puncpat</value>
     </param>
     <param>
-      <key>type</key>
-      <value>float</value>
+      <key>label</key>
+      <value></value>
     </param>
     <param>
-      <key>name</key>
+      <key>short_id</key>
       <value></value>
     </param>
     <param>
-      <key>size</key>
-      <value>5120</value>
+      <key>type</key>
+      <value>string</value>
     </param>
     <param>
-      <key>srate</key>
-      <value>samp_rate</value>
+      <key>value</key>
+      <value>'11'</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_time_sink_x</key>
     <param>
       <key>autoscale</key>
       <value>False</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-2</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>2</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>nconnections</key>
-      <value>1</value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.01</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
       <key>entags</key>
       <value>True</value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(1364, 167)</value>
+    </param>
+    <param>
       <key>gui_hint</key>
       <value></value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>id</key>
+      <value>qtgui_time_sink_x_0</value>
     </param>
     <param>
-      <key>tr_delay</key>
-      <value>0</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>tr_chan</key>
-      <value>0</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>""</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
       <key>label1</key>
       <value>Input</value>
     </param>
     <param>
+      <key>marker1</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style1</key>
+      <value>1</value>
+    </param>
+    <param>
       <key>width1</key>
       <value>1</value>
     </param>
     <param>
-      <key>color1</key>
+      <key>alpha10</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color10</key>
       <value>"blue"</value>
     </param>
     <param>
-      <key>style1</key>
-      <value>1</value>
+      <key>label10</key>
+      <value></value>
     </param>
     <param>
-      <key>marker1</key>
+      <key>marker10</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>style10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label2</key>
-      <value>Dummy</value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>alpha2</key>
+      <value>0.6</value>
     </param>
     <param>
       <key>color2</key>
       <value>"red"</value>
     </param>
     <param>
-      <key>style2</key>
-      <value>1</value>
+      <key>label2</key>
+      <value>Dummy</value>
     </param>
     <param>
       <key>marker2</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>0.6</value>
+      <key>style2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label3</key>
-      <value>Rep. (Rate=3)</value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color3</key>
       <value>"green"</value>
     </param>
     <param>
-      <key>style3</key>
-      <value>1</value>
+      <key>label3</key>
+      <value>Rep. (Rate=3)</value>
     </param>
     <param>
       <key>marker3</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>style3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label4</key>
-      <value>CC (K=7, Rate=2)</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color4</key>
       <value>"black"</value>
     </param>
     <param>
-      <key>style4</key>
-      <value>1</value>
+      <key>label4</key>
+      <value>CC (K=7, Rate=2)</value>
     </param>
     <param>
       <key>marker4</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>style4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label5</key>
-      <value>CCSDS</value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color5</key>
       <value>"cyan"</value>
     </param>
     <param>
-      <key>style5</key>
-      <value>1</value>
+      <key>label5</key>
+      <value>CCSDS</value>
     </param>
     <param>
       <key>marker5</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>style5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label6</key>
-      <value></value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color6</key>
       <value>"magenta"</value>
     </param>
     <param>
-      <key>style6</key>
-      <value>1</value>
+      <key>label6</key>
+      <value></value>
     </param>
     <param>
       <key>marker6</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>style6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label7</key>
-      <value></value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color7</key>
       <value>"yellow"</value>
     </param>
     <param>
-      <key>style7</key>
-      <value>1</value>
+      <key>label7</key>
+      <value></value>
     </param>
     <param>
       <key>marker7</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>style7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label8</key>
-      <value></value>
+      <key>width7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color8</key>
       <value>"dark red"</value>
     </param>
     <param>
-      <key>style8</key>
-      <value>1</value>
+      <key>label8</key>
+      <value></value>
     </param>
     <param>
       <key>marker8</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>style8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label9</key>
-      <value></value>
+      <key>width8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color9</key>
       <value>"dark green"</value>
     </param>
     <param>
-      <key>style9</key>
-      <value>1</value>
+      <key>label9</key>
+      <value></value>
     </param>
     <param>
       <key>marker9</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>style9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label10</key>
+      <key>width9</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>name</key>
       <value></value>
     </param>
     <param>
-      <key>width10</key>
+      <key>nconnections</key>
       <value>1</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"blue"</value>
+      <key>size</key>
+      <value>512</value>
     </param>
     <param>
-      <key>style10</key>
-      <value>1</value>
+      <key>srate</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>marker10</key>
-      <value>-1</value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>tr_delay</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(865, 58)</value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>tr_tag</key>
+      <value>""</value>
     </param>
-  </block>
-  <block>
-    <key>fec_extended_tagged_decoder</key>
     <param>
-      <key>id</key>
-      <value>fec_extended_tagged_decoder_0</value>
+      <key>type</key>
+      <value>float</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>update_time</key>
+      <value>0.01</value>
     </param>
     <param>
-      <key>value</key>
-      <value>fec_extended_decoder</value>
+      <key>ylabel</key>
+      <value>Amplitude</value>
     </param>
     <param>
-      <key>decoder_list</key>
-      <value>dec_cc</value>
+      <key>yunit</key>
+      <value>""</value>
     </param>
     <param>
-      <key>ann</key>
-      <value>None</value>
+      <key>ymax</key>
+      <value>140</value>
     </param>
     <param>
-      <key>puncpat</key>
-      <value>puncpat</value>
+      <key>ymin</key>
+      <value>-1</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_time_sink_x</key>
     <param>
-      <key>lentagname</key>
-      <value>pkt_len</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>ctrlpanel</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>entags</key>
+      <value>True</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(875, 164)</value>
+      <value>(865, 58)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value></value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_cc_decoder_def</key>
+    <param>
+      <key>grid</key>
+      <value>False</value>
+    </param>
     <param>
       <key>id</key>
-      <value>dec_cc</value>
+      <value>qtgui_time_sink_x_0_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>ndim</key>
-      <value>0</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>label1</key>
+      <value>Input</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>4</value>
+      <key>marker1</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>style1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>k</key>
-      <value>k</value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>rate</key>
-      <value>rate</value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>polys</key>
-      <value>polys</value>
+      <key>color10</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>state_start</key>
-      <value>0</value>
+      <key>label10</key>
+      <value></value>
     </param>
     <param>
-      <key>state_end</key>
+      <key>marker10</key>
       <value>-1</value>
     </param>
     <param>
-      <key>mode</key>
-      <value>fec.CC_TERMINATED</value>
+      <key>style10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>padding</key>
-      <value>True</value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>alpha2</key>
+      <value>0.6</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(400, 684)</value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>label2</key>
+      <value>Dummy</value>
     </param>
-  </block>
-  <block>
-    <key>variable_cc_encoder_def</key>
     <param>
-      <key>id</key>
-      <value>enc_cc</value>
+      <key>marker2</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>style2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>ndim</key>
-      <value>0</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>color3</key>
+      <value>"green"</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>label3</key>
+      <value>Rep. (Rate=3)</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>marker3</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>k</key>
-      <value>k</value>
+      <key>style3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>rate</key>
-      <value>rate</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>polys</key>
-      <value>polys</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>state_start</key>
-      <value>0</value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
-      <key>mode</key>
-      <value>fec.CC_TERMINATED</value>
+      <key>label4</key>
+      <value>CC (K=7, Rate=2)</value>
     </param>
     <param>
-      <key>padding</key>
-      <value>True</value>
+      <key>marker4</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>style4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(401, 510)</value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_repack_bits_bb</key>
     <param>
-      <key>id</key>
-      <value>blocks_repack_bits_bb_0_0</value>
+      <key>color5</key>
+      <value>"cyan"</value>
+    </param>
+    <param>
+      <key>label5</key>
+      <value>CCSDS</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>marker5</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>k</key>
+      <key>style5</key>
       <value>1</value>
     </param>
     <param>
-      <key>l</key>
-      <value>8</value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>len_tag_key</key>
-      <value>pkt_len</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>align_output</key>
-      <value>False</value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>label6</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>marker6</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>style6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(925, 309)</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_char_to_float</key>
     <param>
-      <key>id</key>
-      <value>blocks_char_to_float_0_0_0_0</value>
+      <key>label7</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>marker7</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>vlen</key>
+      <key>style7</key>
       <value>1</value>
     </param>
     <param>
-      <key>scale</key>
+      <key>width7</key>
       <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>color8</key>
+      <value>"dark red"</value>
+    </param>
+    <param>
+      <key>label8</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>marker8</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>style8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1200, 191)</value>
+      <key>width8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_crc32_bb</key>
     <param>
-      <key>id</key>
-      <value>digital_crc32_bb_0</value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label9</key>
+      <value></value>
     </param>
     <param>
-      <key>check</key>
-      <value>True</value>
+      <key>marker9</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>lengthtagname</key>
-      <value>pkt_len</value>
+      <key>style9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>width9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>name</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>size</key>
+      <value>5120</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1214, 332)</value>
+      <key>srate</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>tr_chan</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>fec_async_encoder</key>
-    <param>
-      <key>id</key>
-      <value>fec_async_encoder_0</value>
-    </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>tr_delay</key>
+      <value>0</value>
     </param>
     <param>
-      <key>encoder</key>
-      <value>enc_cc</value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>packed</key>
-      <value>True</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
     </param>
     <param>
-      <key>rev_unpack</key>
-      <value>True</value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
     <param>
-      <key>rev_pack</key>
-      <value>True</value>
+      <key>tr_tag</key>
+      <value>""</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>type</key>
+      <value>float</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>update_time</key>
+      <value>0.01</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>ylabel</key>
+      <value>Amplitude</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>yunit</key>
+      <value>""</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(429, 148)</value>
+      <key>ymax</key>
+      <value>2</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>ymin</key>
+      <value>-2</value>
     </param>
   </block>
   <connection>
-    <source_block_id>blocks_vector_source_x_0_1_0</source_block_id>
+    <source_block_id>analog_random_source_x_0</source_block_id>
     <sink_block_id>blocks_throttle_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>analog_random_source_x_0</source_block_id>
-    <sink_block_id>blocks_throttle_0</sink_block_id>
+    <source_block_id>blocks_char_to_float_0_0_0_0</source_block_id>
+    <sink_block_id>qtgui_time_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_throttle_0</source_block_id>
-    <sink_block_id>blocks_stream_to_tagged_stream_0_0</sink_block_id>
+    <source_block_id>blocks_char_to_float_0_1</source_block_id>
+    <sink_block_id>fec_extended_tagged_decoder_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_tagged_stream_to_pdu_0</source_block_id>
-    <sink_block_id>digital_crc32_async_bb_0</sink_block_id>
-    <source_key>pdus</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_crc32_async_bb_0</source_block_id>
-    <sink_block_id>fec_async_encoder_0</sink_block_id>
-    <source_key>out</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>fec_async_encoder_0</source_block_id>
-    <sink_block_id>blocks_pdu_to_tagged_stream_0</sink_block_id>
-    <source_key>out</source_key>
-    <sink_key>pdus</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_stream_to_tagged_stream_0_0</source_block_id>
-    <sink_block_id>blocks_tagged_stream_to_pdu_0</sink_block_id>
+    <source_block_id>blocks_char_to_float_0_1</source_block_id>
+    <sink_block_id>qtgui_time_sink_x_0_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_char_to_float_0_0_0_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_0</sink_block_id>
+    <source_block_id>blocks_pdu_to_tagged_stream_0</source_block_id>
+    <sink_block_id>blocks_repack_bits_bb_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_crc32_bb_0</source_block_id>
-    <sink_block_id>blocks_char_to_float_0_0_0_0</sink_block_id>
+    <source_block_id>blocks_repack_bits_bb_0</source_block_id>
+    <sink_block_id>digital_map_bb_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_pdu_to_tagged_stream_0</source_block_id>
-    <sink_block_id>blocks_repack_bits_bb_0</sink_block_id>
+    <source_block_id>blocks_repack_bits_bb_0_0</source_block_id>
+    <sink_block_id>digital_crc32_bb_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_repack_bits_bb_0</source_block_id>
-    <sink_block_id>digital_map_bb_0</sink_block_id>
+    <source_block_id>blocks_stream_to_tagged_stream_0_0</source_block_id>
+    <sink_block_id>blocks_tagged_stream_to_pdu_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_map_bb_0</source_block_id>
-    <sink_block_id>blocks_char_to_float_0_1</sink_block_id>
+    <source_block_id>blocks_tagged_stream_to_pdu_0</source_block_id>
+    <sink_block_id>digital_crc32_async_bb_0</sink_block_id>
+    <source_key>pdus</source_key>
+    <sink_key>in</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>blocks_throttle_0</source_block_id>
+    <sink_block_id>blocks_stream_to_tagged_stream_0_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_char_to_float_0_1</source_block_id>
-    <sink_block_id>fec_extended_tagged_decoder_0</sink_block_id>
+    <source_block_id>blocks_vector_source_x_0_1_0</source_block_id>
+    <sink_block_id>blocks_throttle_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>fec_extended_tagged_decoder_0</source_block_id>
-    <sink_block_id>blocks_repack_bits_bb_0_0</sink_block_id>
+    <source_block_id>digital_crc32_async_bb_0</source_block_id>
+    <sink_block_id>fec_async_encoder_0</sink_block_id>
+    <source_key>out</source_key>
+    <sink_key>in</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>digital_crc32_bb_0</source_block_id>
+    <sink_block_id>blocks_char_to_float_0_0_0_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_char_to_float_0_1</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_0_0</sink_block_id>
+    <source_block_id>digital_map_bb_0</source_block_id>
+    <sink_block_id>blocks_char_to_float_0_1</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_repack_bits_bb_0_0</source_block_id>
-    <sink_block_id>digital_crc32_bb_0</sink_block_id>
+    <source_block_id>fec_async_encoder_0</source_block_id>
+    <sink_block_id>blocks_pdu_to_tagged_stream_0</sink_block_id>
+    <source_key>out</source_key>
+    <sink_key>pdus</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>fec_extended_tagged_decoder_0</source_block_id>
+    <sink_block_id>blocks_repack_bits_bb_0_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
diff --git a/gr-fec/examples/fecapi_encoders.grc 
b/gr-fec/examples/fecapi_encoders.grc
index 7568e66..f367e8e 100644
--- a/gr-fec/examples/fecapi_encoders.grc
+++ b/gr-fec/examples/fecapi_encoders.grc
@@ -1,5 +1,5 @@
-<?xml version='1.0' encoding='ASCII'?>
-<?grc format='1' created='3.7.8'?>
+<?xml version='1.0' encoding='utf-8'?>
+<?grc format='1' created='3.7.8rc1'?>
 <flow_graph>
   <timestamp>Sat May 17 17:08:36 2014</timestamp>
   <block>
@@ -13,6 +13,10 @@
       <value></value>
     </param>
     <param>
+      <key>window_size</key>
+      <value>2000,2000</value>
+    </param>
+    <param>
       <key>category</key>
       <value>Custom</value>
     </param>
@@ -68,10 +72,6 @@
       <key>title</key>
       <value></value>
     </param>
-    <param>
-      <key>window_size</key>
-      <value>2000,2000</value>
-    </param>
   </block>
   <block>
     <key>variable_cc_encoder_def</key>
@@ -1423,7 +1423,7 @@
     </param>
     <param>
       <key>label1</key>
-      <value></value>
+      <value>Rep (x3)</value>
     </param>
     <param>
       <key>marker1</key>
diff --git a/gr-fec/examples/fecapi_tagged_encoders.grc 
b/gr-fec/examples/fecapi_tagged_encoders.grc
index 2617593..91f3dac 100644
--- a/gr-fec/examples/fecapi_tagged_encoders.grc
+++ b/gr-fec/examples/fecapi_tagged_encoders.grc
@@ -1,22 +1,27 @@
-<?xml version='1.0' encoding='ASCII'?>
+<?xml version='1.0' encoding='utf-8'?>
+<?grc format='1' created='3.7.8rc1'?>
 <flow_graph>
   <timestamp>Sat May 17 17:13:34 2014</timestamp>
   <block>
     <key>options</key>
     <param>
-      <key>id</key>
-      <value>fecapi_tagged_encoders</value>
+      <key>author</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>title</key>
-      <value></value>
+      <key>window_size</key>
+      <value>2000,2000</value>
     </param>
     <param>
-      <key>author</key>
+      <key>category</key>
+      <value>Custom</value>
+    </param>
+    <param>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
@@ -24,16 +29,32 @@
       <value></value>
     </param>
     <param>
-      <key>window_size</key>
-      <value>2000,2000</value>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(10, 9)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
       <key>generate_options</key>
       <value>qt_gui</value>
     </param>
     <param>
-      <key>category</key>
-      <value>Custom</value>
+      <key>id</key>
+      <value>fecapi_tagged_encoders</value>
+    </param>
+    <param>
+      <key>max_nouts</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>realtime_scheduling</key>
+      <value></value>
     </param>
     <param>
       <key>run_options</key>
@@ -44,2474 +65,2614 @@
       <value>True</value>
     </param>
     <param>
-      <key>max_nouts</key>
-      <value>0</value>
+      <key>thread_safe_setters</key>
+      <value></value>
     </param>
     <param>
-      <key>realtime_scheduling</key>
+      <key>title</key>
       <value></value>
     </param>
+  </block>
+  <block>
+    <key>variable_cc_encoder_def</key>
+    <param>
+      <key>padding</key>
+      <value>False</value>
+    </param>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(10, 9)</value>
+      <key>k</key>
+      <value>k</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>dim1</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>k</value>
+      <key>dim2</key>
+      <value>1</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>value</key>
-      <value>7</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
+      <key>framebits</key>
+      <value>MTU*8</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(20, 548)</value>
+      <value>(153, 547)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>rate</value>
+      <value>enc_cc</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>ndim</key>
+      <value>1</value>
     </param>
     <param>
-      <key>value</key>
-      <value>2</value>
+      <key>polys</key>
+      <value>polys</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>rate</key>
+      <value>rate</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(86, 548)</value>
+      <key>state_start</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>mode</key>
+      <value>fec.CC_TERMINATED</value>
     </param>
   </block>
   <block>
-    <key>variable</key>
+    <key>variable_ccsds_encoder_def</key>
     <param>
-      <key>id</key>
-      <value>polys</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>dim1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>value</key>
-      <value>[109, 79]</value>
+      <key>dim2</key>
+      <value>4</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>framebits</key>
+      <value>MTU*8</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(61, 610)</value>
+      <value>(349, 595)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>samp_rate</value>
+      <value>enc_ccsds</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>ndim</key>
+      <value>1</value>
     </param>
     <param>
-      <key>value</key>
-      <value>50000</value>
+      <key>state_start</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>mode</key>
+      <value>fec.CC_TERMINATED</value>
     </param>
+  </block>
+  <block>
+    <key>variable_dummy_encoder_def</key>
     <param>
-      <key>_coordinate</key>
-      <value>(11, 72)</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>dim1</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>length_tag</value>
+      <key>dim2</key>
+      <value>1</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"packet_len"</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
+      <key>framebits</key>
+      <value>MTU*8</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(100, 72)</value>
+      <value>(738, 627)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>parameter</key>
     <param>
       <key>id</key>
-      <value>puncpat</value>
+      <value>enc_dummy</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>ndim</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>variable_repetition_encoder_def</key>
     <param>
-      <key>label</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>value</key>
-      <value>'11'</value>
+      <key>dim1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>type</key>
-      <value>string</value>
+      <key>dim2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>short_id</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>framebits</key>
+      <value>MTU*8</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(211, 11)</value>
+      <value>(541, 611)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>parameter</key>
     <param>
       <key>id</key>
-      <value>MTU</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>label</key>
-      <value>MTU</value>
+      <value>enc_rep</value>
     </param>
     <param>
-      <key>value</key>
-      <value>1000</value>
+      <key>ndim</key>
+      <value>1</value>
     </param>
     <param>
-      <key>type</key>
-      <value>intx</value>
+      <key>rep</key>
+      <value>3</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>short_id</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(292, 11)</value>
+      <value>(20, 548)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
+    <param>
+      <key>id</key>
+      <value>k</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>7</value>
+    </param>
   </block>
   <block>
-    <key>parameter</key>
+    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>frame_size</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Frame Size</value>
+      <key>_coordinate</key>
+      <value>(100, 72)</value>
     </param>
     <param>
-      <key>value</key>
-      <value>30</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>intx</value>
-    </param>
+      <key>id</key>
+      <value>length_tag</value>
+    </param>
     <param>
-      <key>short_id</key>
-      <value></value>
+      <key>value</key>
+      <value>"packet_len"</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(373, 11)</value>
+      <value>(61, 610)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_ctrlport_monitor_performance</key>
     <param>
       <key>id</key>
-      <value>blocks_ctrlport_monitor_performance_0</value>
+      <value>polys</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>False</value>
+      <key>value</key>
+      <value>[109, 79]</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>en</key>
-      <value>True</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(482, 12)</value>
+      <value>(86, 548)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
+    <param>
+      <key>id</key>
+      <value>rate</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>2</value>
+    </param>
   </block>
   <block>
-    <key>blocks_vector_source_x</key>
+    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>blocks_vector_source_x_0_1_0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
-    </param>
-    <param>
-      <key>vector</key>
-      <value>4*[0, 0, 1, 0, 3, 0, 7, 0, 15, 0, 31, 0, 63, 0, 127]</value>
+      <key>_coordinate</key>
+      <value>(11, 72)</value>
     </param>
     <param>
-      <key>tags</key>
-      <value>[]</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>repeat</key>
-      <value>True</value>
+      <key>id</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>value</key>
+      <value>50000</value>
     </param>
+  </block>
+  <block>
+    <key>parameter</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(65, 137)</value>
+      <value>(292, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
-      <value>180</value>
+      <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_throttle</key>
     <param>
       <key>id</key>
-      <value>blocks_throttle_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>MTU</value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>label</key>
+      <value>MTU</value>
     </param>
     <param>
-      <key>samples_per_second</key>
-      <value>samp_rate</value>
+      <key>short_id</key>
+      <value></value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>type</key>
+      <value>intx</value>
     </param>
     <param>
-      <key>ignoretag</key>
-      <value>True</value>
+      <key>value</key>
+      <value>1000</value>
     </param>
+  </block>
+  <block>
+    <key>analog_random_source_x</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>False</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(65, 218)</value>
+      <value>(53, 447)</value>
     </param>
     <param>
       <key>_rotation</key>
-      <value>0</value>
+      <value>180</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_stream_to_tagged_stream</key>
     <param>
       <key>id</key>
-      <value>blocks_stream_to_tagged_stream_0_0</value>
+      <value>analog_random_source_x_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>max</key>
+      <value>256</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>packet_len</key>
-      <value>frame_size</value>
+      <key>min</key>
+      <value>0</value>
     </param>
     <param>
-      <key>len_tag_key</key>
-      <value>length_tag</value>
+      <key>num_samps</key>
+      <value>1000</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>byte</value>
+    </param>
+    <param>
+      <key>repeat</key>
+      <value>True</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_char_to_float</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(65, 267)</value>
+      <value>(643, 374)</value>
     </param>
     <param>
       <key>_rotation</key>
-      <value>180</value>
+      <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_repack_bits_bb</key>
     <param>
       <key>id</key>
-      <value>blocks_repack_bits_bb_0</value>
+      <value>blocks_char_to_float_1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>k</key>
-      <value>8</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>l</key>
+      <key>scale</key>
       <value>1</value>
     </param>
     <param>
-      <key>len_tag_key</key>
-      <value>packet_len</value>
-    </param>
-    <param>
-      <key>align_output</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>swap</key>
-      <value>False</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_char_to_float</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(71, 333)</value>
+      <value>(643, 295)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_time_sink_x</key>
     <param>
       <key>id</key>
-      <value>qtgui_time_sink_x_3</value>
+      <value>blocks_char_to_float_1_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>float</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>name</key>
-      <value></value>
+      <key>scale</key>
+      <value>1</value>
     </param>
     <param>
-      <key>size</key>
-      <value>2048</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_char_to_float</key>
     <param>
-      <key>srate</key>
-      <value>samp_rate</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>autoscale</key>
-      <value>False</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-0.5</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>1.5</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>nconnections</key>
+      <key>_coordinate</key>
+      <value>(643, 137)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>blocks_char_to_float_1_0_0</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>scale</key>
       <value>1</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.05</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_char_to_float</key>
     <param>
-      <key>entags</key>
-      <value>True</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>3,0,1,1</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>_coordinate</key>
+      <value>(642, 216)</value>
     </param>
     <param>
-      <key>tr_delay</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>tr_chan</key>
+      <key>id</key>
+      <value>blocks_char_to_float_1_0_0_0</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>packet_len</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label1</key>
-      <value>CC</value>
+      <key>scale</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width1</key>
+      <key>vlen</key>
       <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_ctrlport_monitor_performance</key>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>style1</key>
-      <value>1</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>marker1</key>
-      <value>-1</value>
+      <key>_enabled</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>en</key>
+      <value>True</value>
     </param>
     <param>
-      <key>label2</key>
-      <value>CC</value>
+      <key>_coordinate</key>
+      <value>(482, 12)</value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>id</key>
+      <value>blocks_ctrlport_monitor_performance_0</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_repack_bits_bb</key>
     <param>
-      <key>style2</key>
+      <key>k</key>
+      <value>8</value>
+    </param>
+    <param>
+      <key>l</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker2</key>
-      <value>-1</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>0.6</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>label3</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>endianness</key>
+      <value>gr.GR_LSB_FIRST</value>
     </param>
     <param>
-      <key>style3</key>
-      <value>1</value>
+      <key>_coordinate</key>
+      <value>(71, 333)</value>
     </param>
     <param>
-      <key>marker3</key>
-      <value>-1</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>id</key>
+      <value>blocks_repack_bits_bb_0</value>
     </param>
     <param>
-      <key>label4</key>
-      <value></value>
+      <key>len_tag_key</key>
+      <value>packet_len</value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style4</key>
-      <value>1</value>
+      <key>align_output</key>
+      <value>False</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_stream_to_tagged_stream</key>
     <param>
-      <key>marker4</key>
-      <value>-1</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>label5</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>_coordinate</key>
+      <value>(65, 267)</value>
     </param>
     <param>
-      <key>style5</key>
-      <value>1</value>
+      <key>_rotation</key>
+      <value>180</value>
     </param>
     <param>
-      <key>marker5</key>
-      <value>-1</value>
+      <key>id</key>
+      <value>blocks_stream_to_tagged_stream_0_0</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>len_tag_key</key>
+      <value>length_tag</value>
     </param>
     <param>
-      <key>label6</key>
-      <value></value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
+      <key>packet_len</key>
+      <value>frame_size</value>
     </param>
     <param>
-      <key>style6</key>
+      <key>type</key>
+      <value>byte</value>
+    </param>
+    <param>
+      <key>vlen</key>
       <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_throttle</key>
     <param>
-      <key>marker6</key>
-      <value>-1</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>label7</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>_coordinate</key>
+      <value>(65, 218)</value>
     </param>
     <param>
-      <key>style7</key>
-      <value>1</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>marker7</key>
-      <value>-1</value>
+      <key>id</key>
+      <value>blocks_throttle_0</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>ignoretag</key>
+      <value>True</value>
     </param>
     <param>
-      <key>label8</key>
-      <value></value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>samples_per_second</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>style8</key>
+      <key>type</key>
+      <value>byte</value>
+    </param>
+    <param>
+      <key>vlen</key>
       <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_vector_source_x</key>
     <param>
-      <key>marker8</key>
-      <value>-1</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>label9</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>_coordinate</key>
+      <value>(65, 137)</value>
     </param>
     <param>
-      <key>style9</key>
+      <key>_rotation</key>
+      <value>180</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>blocks_vector_source_x_0_1_0</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>byte</value>
+    </param>
+    <param>
+      <key>repeat</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>tags</key>
+      <value>[]</value>
+    </param>
+    <param>
+      <key>vlen</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker9</key>
-      <value>-1</value>
+      <key>vector</key>
+      <value>4*[0, 0, 1, 0, 3, 0, 7, 0, 15, 0, 31, 0, 63, 0, 127]</value>
     </param>
+  </block>
+  <block>
+    <key>fec_extended_tagged_encoder</key>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>label10</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>width10</key>
-      <value>1</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"blue"</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>style10</key>
-      <value>1</value>
+      <key>encoder_list</key>
+      <value>enc_dummy</value>
     </param>
     <param>
-      <key>marker10</key>
-      <value>-1</value>
+      <key>_coordinate</key>
+      <value>(376, 121)</value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>fec_extended_tagged_encoder_0</value>
+    </param>
+    <param>
+      <key>lentagname</key>
+      <value>length_tag</value>
     </param>
     <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>puncpat</key>
+      <value>puncpat</value>
+    </param>
+  </block>
+  <block>
+    <key>fec_extended_tagged_encoder</key>
+    <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>encoder_list</key>
+      <value>enc_rep</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(819, 378)</value>
+      <value>(376, 200)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
+    <param>
+      <key>id</key>
+      <value>fec_extended_tagged_encoder_1</value>
+    </param>
+    <param>
+      <key>lentagname</key>
+      <value>length_tag</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>puncpat</key>
+      <value>puncpat</value>
+    </param>
   </block>
   <block>
-    <key>qtgui_time_sink_x</key>
+    <key>fec_extended_tagged_encoder</key>
     <param>
-      <key>id</key>
-      <value>qtgui_time_sink_x_2</value>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>type</key>
-      <value>float</value>
+      <key>encoder_list</key>
+      <value>enc_ccsds</value>
     </param>
     <param>
-      <key>name</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(376, 279)</value>
     </param>
     <param>
-      <key>size</key>
-      <value>2048</value>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>fec_extended_tagged_encoder_2</value>
+    </param>
+    <param>
+      <key>lentagname</key>
+      <value>length_tag</value>
     </param>
     <param>
-      <key>srate</key>
-      <value>samp_rate</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>autoscale</key>
-      <value>False</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-0.5</value>
+      <key>puncpat</key>
+      <value>puncpat</value>
     </param>
+  </block>
+  <block>
+    <key>fec_extended_tagged_encoder</key>
     <param>
-      <key>ymax</key>
-      <value>1.5</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>nconnections</key>
-      <value>1</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.05</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>entags</key>
+      <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>2,0,1,1</value>
+      <key>encoder_list</key>
+      <value>enc_cc</value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
+      <key>_coordinate</key>
+      <value>(376, 358)</value>
     </param>
     <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>id</key>
+      <value>fec_extended_tagged_encoder_3</value>
     </param>
     <param>
-      <key>tr_delay</key>
-      <value>0</value>
+      <key>lentagname</key>
+      <value>length_tag</value>
     </param>
     <param>
-      <key>tr_chan</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>packet_len</value>
-    </param>
-    <param>
-      <key>label1</key>
-      <value>CCSDS</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width1</key>
-      <value>1</value>
+      <key>puncpat</key>
+      <value>puncpat</value>
     </param>
+  </block>
+  <block>
+    <key>parameter</key>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>style1</key>
-      <value>1</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>marker1</key>
-      <value>-1</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>_coordinate</key>
+      <value>(373, 11)</value>
     </param>
     <param>
-      <key>label2</key>
-      <value>CC</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>id</key>
+      <value>frame_size</value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>label</key>
+      <value>Frame Size</value>
     </param>
     <param>
-      <key>style2</key>
-      <value>1</value>
+      <key>short_id</key>
+      <value></value>
     </param>
     <param>
-      <key>marker2</key>
-      <value>-1</value>
+      <key>type</key>
+      <value>intx</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>0.6</value>
+      <key>value</key>
+      <value>30</value>
     </param>
+  </block>
+  <block>
+    <key>parameter</key>
     <param>
-      <key>label3</key>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>style3</key>
-      <value>1</value>
+      <key>_coordinate</key>
+      <value>(211, 11)</value>
     </param>
     <param>
-      <key>marker3</key>
-      <value>-1</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>id</key>
+      <value>puncpat</value>
     </param>
     <param>
-      <key>label4</key>
+      <key>label</key>
       <value></value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>short_id</key>
+      <value></value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>type</key>
+      <value>string</value>
     </param>
     <param>
-      <key>style4</key>
-      <value>1</value>
+      <key>value</key>
+      <value>'11'</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_time_sink_x</key>
     <param>
-      <key>marker4</key>
-      <value>-1</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>label5</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>style5</key>
-      <value>1</value>
+      <key>entags</key>
+      <value>True</value>
     </param>
     <param>
-      <key>marker5</key>
-      <value>-1</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>_coordinate</key>
+      <value>(819, 88)</value>
     </param>
     <param>
-      <key>label6</key>
-      <value></value>
+      <key>gui_hint</key>
+      <value>0,0,1,1</value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>style6</key>
-      <value>1</value>
+      <key>id</key>
+      <value>qtgui_time_sink_x_0</value>
     </param>
     <param>
-      <key>marker6</key>
-      <value>-1</value>
+      <key>legend</key>
+      <value>True</value>
     </param>
     <param>
-      <key>alpha6</key>
+      <key>alpha1</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label7</key>
-      <value></value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>label1</key>
+      <value>None</value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>marker1</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>style7</key>
+      <key>style1</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker7</key>
-      <value>-1</value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha7</key>
+      <key>alpha10</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label8</key>
-      <value></value>
+      <key>color10</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>label10</key>
+      <value></value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>marker10</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>style8</key>
+      <key>style10</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker8</key>
-      <value>-1</value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>alpha2</key>
+      <value>0.6</value>
     </param>
     <param>
-      <key>label9</key>
-      <value></value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>label2</key>
+      <value>CC</value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>marker2</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>style9</key>
+      <key>style2</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker9</key>
-      <value>-1</value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha9</key>
+      <key>alpha3</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label10</key>
-      <value></value>
+      <key>color3</key>
+      <value>"green"</value>
     </param>
     <param>
-      <key>width10</key>
-      <value>1</value>
+      <key>label3</key>
+      <value></value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"blue"</value>
+      <key>marker3</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>style10</key>
+      <key>style3</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker10</key>
-      <value>-1</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha10</key>
+      <key>alpha4</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>label4</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(819, 282)</value>
+      <key>marker4</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>style4</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_time_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_time_sink_x_1</value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>float</value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
     <param>
-      <key>name</key>
+      <key>label5</key>
       <value></value>
     </param>
     <param>
-      <key>size</key>
-      <value>2048</value>
+      <key>marker5</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>srate</key>
-      <value>samp_rate</value>
+      <key>style5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>autoscale</key>
-      <value>False</value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-0.5</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>1.5</value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
     <param>
-      <key>nconnections</key>
-      <value>1</value>
+      <key>label6</key>
+      <value></value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.05</value>
+      <key>marker6</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>entags</key>
-      <value>True</value>
+      <key>style6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>1,0,1,1</value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>label7</key>
+      <value></value>
     </param>
     <param>
-      <key>tr_delay</key>
-      <value>0</value>
+      <key>marker7</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>tr_chan</key>
-      <value>0</value>
+      <key>style7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>packet_len</value>
+      <key>width7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label1</key>
-      <value>Rep (Rate=3)</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>width1</key>
-      <value>1</value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>label8</key>
+      <value></value>
     </param>
     <param>
-      <key>style1</key>
+      <key>marker8</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style8</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker1</key>
-      <value>-1</value>
+      <key>width8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha1</key>
+      <key>alpha9</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label2</key>
-      <value>CC</value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>label9</key>
+      <value></value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>marker9</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>style2</key>
+      <key>style9</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker2</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha2</key>
-      <value>0.6</value>
+      <key>width9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label3</key>
+      <key>name</key>
       <value></value>
     </param>
     <param>
-      <key>width3</key>
+      <key>nconnections</key>
       <value>1</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>size</key>
+      <value>2048</value>
     </param>
     <param>
-      <key>style3</key>
-      <value>1</value>
+      <key>srate</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>marker3</key>
-      <value>-1</value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>tr_delay</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label4</key>
-      <value></value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
     <param>
-      <key>style4</key>
-      <value>1</value>
+      <key>tr_tag</key>
+      <value>packet_len</value>
     </param>
     <param>
-      <key>marker4</key>
-      <value>-1</value>
+      <key>type</key>
+      <value>float</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>update_time</key>
+      <value>0.05</value>
     </param>
     <param>
-      <key>label5</key>
-      <value></value>
+      <key>ylabel</key>
+      <value>Amplitude</value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>yunit</key>
+      <value>""</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>ymax</key>
+      <value>1.5</value>
     </param>
     <param>
-      <key>style5</key>
-      <value>1</value>
+      <key>ymin</key>
+      <value>-0.5</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_time_sink_x</key>
     <param>
-      <key>marker5</key>
-      <value>-1</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>label6</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>style6</key>
-      <value>1</value>
+      <key>entags</key>
+      <value>True</value>
     </param>
     <param>
-      <key>marker6</key>
-      <value>-1</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>_coordinate</key>
+      <value>(819, 185)</value>
     </param>
     <param>
-      <key>label7</key>
-      <value></value>
+      <key>gui_hint</key>
+      <value>1,0,1,1</value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
-    <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+    <param>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>style7</key>
-      <value>1</value>
+      <key>id</key>
+      <value>qtgui_time_sink_x_1</value>
     </param>
     <param>
-      <key>marker7</key>
-      <value>-1</value>
+      <key>legend</key>
+      <value>True</value>
     </param>
     <param>
-      <key>alpha7</key>
+      <key>alpha1</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label8</key>
-      <value></value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>label1</key>
+      <value>Rep (x3)</value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>marker1</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>style8</key>
+      <key>style1</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker8</key>
-      <value>-1</value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha8</key>
+      <key>alpha10</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label9</key>
-      <value></value>
+      <key>color10</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>label10</key>
+      <value></value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>marker10</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>style9</key>
+      <key>style10</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker9</key>
-      <value>-1</value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>alpha2</key>
+      <value>0.6</value>
     </param>
     <param>
-      <key>label10</key>
-      <value></value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>width10</key>
-      <value>1</value>
+      <key>label2</key>
+      <value>CC</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"blue"</value>
+      <key>marker2</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>style10</key>
+      <key>style2</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker10</key>
-      <value>-1</value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha10</key>
+      <key>alpha3</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>color3</key>
+      <value>"green"</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>label3</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(819, 185)</value>
+      <key>marker3</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>style3</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_char_to_float</key>
     <param>
-      <key>id</key>
-      <value>blocks_char_to_float_1</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
-      <key>scale</key>
-      <value>1</value>
+      <key>label4</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>marker4</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>style4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(643, 374)</value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>label5</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>fec_extended_tagged_encoder</key>
     <param>
-      <key>id</key>
-      <value>fec_extended_tagged_encoder_3</value>
+      <key>marker5</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>style5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>encoder_list</key>
-      <value>enc_cc</value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>puncpat</key>
-      <value>puncpat</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>lentagname</key>
-      <value>length_tag</value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>label6</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>marker6</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>style6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(376, 358)</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_char_to_float</key>
     <param>
-      <key>id</key>
-      <value>blocks_char_to_float_1_0</value>
+      <key>label7</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>marker7</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>vlen</key>
+      <key>style7</key>
       <value>1</value>
     </param>
     <param>
-      <key>scale</key>
+      <key>width7</key>
       <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>color8</key>
+      <value>"dark red"</value>
+    </param>
+    <param>
+      <key>label8</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>marker8</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>style8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(643, 295)</value>
+      <key>width8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
-  </block>
-  <block>
-    <key>fec_extended_tagged_encoder</key>
     <param>
-      <key>id</key>
-      <value>fec_extended_tagged_encoder_2</value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label9</key>
+      <value></value>
     </param>
     <param>
-      <key>encoder_list</key>
-      <value>enc_ccsds</value>
+      <key>marker9</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>puncpat</key>
-      <value>puncpat</value>
+      <key>style9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>lentagname</key>
-      <value>length_tag</value>
+      <key>width9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>name</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>size</key>
+      <value>2048</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>srate</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(376, 279)</value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>tr_delay</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_char_to_float</key>
     <param>
-      <key>id</key>
-      <value>blocks_char_to_float_1_0_0_0</value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
     <param>
-      <key>scale</key>
-      <value>1</value>
+      <key>tr_tag</key>
+      <value>packet_len</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>type</key>
+      <value>float</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>update_time</key>
+      <value>0.05</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>ylabel</key>
+      <value>Amplitude</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>yunit</key>
+      <value>""</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(642, 216)</value>
+      <key>ymax</key>
+      <value>1.5</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>ymin</key>
+      <value>-0.5</value>
     </param>
   </block>
   <block>
-    <key>fec_extended_tagged_encoder</key>
-    <param>
-      <key>id</key>
-      <value>fec_extended_tagged_encoder_1</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
+    <key>qtgui_time_sink_x</key>
     <param>
-      <key>encoder_list</key>
-      <value>enc_rep</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
-      <key>puncpat</key>
-      <value>puncpat</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>lentagname</key>
-      <value>length_tag</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
     <param>
       <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>entags</key>
+      <value>True</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(376, 200)</value>
+      <value>(819, 282)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>2,0,1,1</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_char_to_float</key>
+    <param>
+      <key>grid</key>
+      <value>False</value>
+    </param>
     <param>
       <key>id</key>
-      <value>blocks_char_to_float_1_0_0</value>
+      <value>qtgui_time_sink_x_2</value>
     </param>
     <param>
-      <key>_enabled</key>
+      <key>legend</key>
       <value>True</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>scale</key>
-      <value>1</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>label1</key>
+      <value>CCSDS</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>marker1</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>style1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(643, 137)</value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>color10</key>
+      <value>"blue"</value>
     </param>
-  </block>
-  <block>
-    <key>fec_extended_tagged_encoder</key>
     <param>
-      <key>id</key>
-      <value>fec_extended_tagged_encoder_0</value>
+      <key>label10</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>marker10</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>encoder_list</key>
-      <value>enc_dummy</value>
+      <key>style10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>puncpat</key>
-      <value>puncpat</value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>lentagname</key>
-      <value>length_tag</value>
+      <key>alpha2</key>
+      <value>0.6</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>label2</key>
+      <value>CC</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>marker2</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>style2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(376, 121)</value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_time_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_time_sink_x_0</value>
+      <key>color3</key>
+      <value>"green"</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label3</key>
+      <value></value>
     </param>
     <param>
-      <key>type</key>
-      <value>float</value>
+      <key>marker3</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>name</key>
-      <value></value>
+      <key>style3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>size</key>
-      <value>2048</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>srate</key>
-      <value>samp_rate</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>autoscale</key>
-      <value>False</value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-0.5</value>
+      <key>label4</key>
+      <value></value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>1.5</value>
+      <key>marker4</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>nconnections</key>
+      <key>style4</key>
       <value>1</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.05</value>
-    </param>
-    <param>
-      <key>entags</key>
-      <value>True</value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>0,0,1,1</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
     <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
+      <key>label5</key>
+      <value></value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>marker5</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>tr_delay</key>
-      <value>0</value>
+      <key>style5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>tr_chan</key>
-      <value>0</value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>packet_len</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>label1</key>
-      <value>None</value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
     <param>
-      <key>width1</key>
-      <value>1</value>
+      <key>label6</key>
+      <value></value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>marker6</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>style1</key>
+      <key>style6</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker1</key>
-      <value>-1</value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha1</key>
+      <key>alpha7</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label2</key>
-      <value>CC</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>label7</key>
+      <value></value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>marker7</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>style2</key>
+      <key>style7</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker2</key>
-      <value>-1</value>
+      <key>width7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>0.6</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>label3</key>
-      <value></value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>label8</key>
+      <value></value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>marker8</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>style3</key>
+      <key>style8</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker3</key>
-      <value>-1</value>
+      <key>width8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha3</key>
+      <key>alpha9</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label4</key>
-      <value></value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>label9</key>
+      <value></value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>marker9</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>style4</key>
+      <key>style9</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker4</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>width9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label5</key>
+      <key>name</key>
       <value></value>
     </param>
     <param>
-      <key>width5</key>
+      <key>nconnections</key>
       <value>1</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>size</key>
+      <value>2048</value>
     </param>
     <param>
-      <key>style5</key>
-      <value>1</value>
+      <key>srate</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>marker5</key>
-      <value>-1</value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>tr_delay</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label6</key>
-      <value></value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
     <param>
-      <key>style6</key>
-      <value>1</value>
+      <key>tr_tag</key>
+      <value>packet_len</value>
     </param>
     <param>
-      <key>marker6</key>
-      <value>-1</value>
+      <key>type</key>
+      <value>float</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>update_time</key>
+      <value>0.05</value>
     </param>
     <param>
-      <key>label7</key>
-      <value></value>
+      <key>ylabel</key>
+      <value>Amplitude</value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>yunit</key>
+      <value>""</value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>ymax</key>
+      <value>1.5</value>
     </param>
     <param>
-      <key>style7</key>
-      <value>1</value>
+      <key>ymin</key>
+      <value>-0.5</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_time_sink_x</key>
     <param>
-      <key>marker7</key>
-      <value>-1</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>label8</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>style8</key>
-      <value>1</value>
+      <key>entags</key>
+      <value>True</value>
     </param>
     <param>
-      <key>marker8</key>
-      <value>-1</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>_coordinate</key>
+      <value>(819, 378)</value>
     </param>
     <param>
-      <key>label9</key>
-      <value></value>
+      <key>gui_hint</key>
+      <value>3,0,1,1</value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>style9</key>
-      <value>1</value>
+      <key>id</key>
+      <value>qtgui_time_sink_x_3</value>
     </param>
     <param>
-      <key>marker9</key>
-      <value>-1</value>
+      <key>legend</key>
+      <value>True</value>
     </param>
     <param>
-      <key>alpha9</key>
+      <key>alpha1</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label10</key>
-      <value></value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>width10</key>
-      <value>1</value>
+      <key>label1</key>
+      <value>CC</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"blue"</value>
+      <key>marker1</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>style10</key>
+      <key>style1</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker10</key>
-      <value>-1</value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
       <key>alpha10</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>color10</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>label10</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(819, 88)</value>
+      <key>marker10</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>style10</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>analog_random_source_x</key>
     <param>
-      <key>id</key>
-      <value>analog_random_source_x_0</value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>False</value>
+      <key>alpha2</key>
+      <value>0.6</value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>min</key>
-      <value>0</value>
+      <key>label2</key>
+      <value>CC</value>
     </param>
     <param>
-      <key>max</key>
-      <value>256</value>
+      <key>marker2</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>num_samps</key>
-      <value>1000</value>
+      <key>style2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>repeat</key>
-      <value>True</value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>color3</key>
+      <value>"green"</value>
+    </param>
+    <param>
+      <key>label3</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>marker3</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>style3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(53, 447)</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>180</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_cc_encoder_def</key>
     <param>
-      <key>id</key>
-      <value>enc_cc</value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label4</key>
+      <value></value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>marker4</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>style4</key>
       <value>1</value>
     </param>
     <param>
-      <key>dim1</key>
+      <key>width4</key>
       <value>1</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>MTU*8</value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
     <param>
-      <key>k</key>
-      <value>k</value>
+      <key>label5</key>
+      <value></value>
     </param>
     <param>
-      <key>rate</key>
-      <value>rate</value>
+      <key>marker5</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>polys</key>
-      <value>polys</value>
+      <key>style5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>state_start</key>
-      <value>0</value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>mode</key>
-      <value>fec.CC_TERMINATED</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>color6</key>
+      <value>"magenta"</value>
+    </param>
+    <param>
+      <key>label6</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(153, 547)</value>
+      <key>marker6</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>style6</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>variable_repetition_encoder_def</key>
     <param>
-      <key>id</key>
-      <value>enc_rep</value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
-      <key>ndim</key>
-      <value>1</value>
+      <key>label7</key>
+      <value></value>
     </param>
     <param>
-      <key>dim1</key>
+      <key>marker7</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style7</key>
       <value>1</value>
     </param>
     <param>
-      <key>dim2</key>
+      <key>width7</key>
       <value>1</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>MTU*8</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>rep</key>
-      <value>3</value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>label8</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(541, 611)</value>
+      <key>marker8</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>style8</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>variable_ccsds_encoder_def</key>
     <param>
-      <key>id</key>
-      <value>enc_ccsds</value>
+      <key>width8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
     <param>
-      <key>ndim</key>
-      <value>1</value>
+      <key>label9</key>
+      <value></value>
     </param>
     <param>
-      <key>dim1</key>
+      <key>marker9</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style9</key>
       <value>1</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>4</value>
+      <key>width9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>MTU*8</value>
+      <key>name</key>
+      <value></value>
     </param>
     <param>
-      <key>state_start</key>
-      <value>0</value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>mode</key>
-      <value>fec.CC_TERMINATED</value>
+      <key>size</key>
+      <value>2048</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>srate</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(349, 595)</value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>tr_delay</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_dummy_encoder_def</key>
     <param>
-      <key>id</key>
-      <value>enc_dummy</value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
     <param>
-      <key>ndim</key>
-      <value>1</value>
+      <key>tr_tag</key>
+      <value>packet_len</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>type</key>
+      <value>float</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>update_time</key>
+      <value>0.05</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>MTU*8</value>
+      <key>ylabel</key>
+      <value>Amplitude</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>yunit</key>
+      <value>""</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(738, 627)</value>
+      <key>ymax</key>
+      <value>1.5</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>ymin</key>
+      <value>-0.5</value>
     </param>
   </block>
   <connection>
@@ -2521,32 +2682,32 @@
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_vector_source_x_0_1_0</source_block_id>
-    <sink_block_id>blocks_throttle_0</sink_block_id>
+    <source_block_id>blocks_char_to_float_1</source_block_id>
+    <sink_block_id>qtgui_time_sink_x_3</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_stream_to_tagged_stream_0_0</source_block_id>
-    <sink_block_id>blocks_repack_bits_bb_0</sink_block_id>
+    <source_block_id>blocks_char_to_float_1_0</source_block_id>
+    <sink_block_id>qtgui_time_sink_x_2</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_throttle_0</source_block_id>
-    <sink_block_id>blocks_stream_to_tagged_stream_0_0</sink_block_id>
+    <source_block_id>blocks_char_to_float_1_0_0</source_block_id>
+    <sink_block_id>qtgui_time_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_repack_bits_bb_0</source_block_id>
-    <sink_block_id>fec_extended_tagged_encoder_3</sink_block_id>
+    <source_block_id>blocks_char_to_float_1_0_0_0</source_block_id>
+    <sink_block_id>qtgui_time_sink_x_1</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
     <source_block_id>blocks_repack_bits_bb_0</source_block_id>
-    <sink_block_id>fec_extended_tagged_encoder_2</sink_block_id>
+    <sink_block_id>fec_extended_tagged_encoder_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
@@ -2558,55 +2719,55 @@
   </connection>
   <connection>
     <source_block_id>blocks_repack_bits_bb_0</source_block_id>
-    <sink_block_id>fec_extended_tagged_encoder_0</sink_block_id>
+    <sink_block_id>fec_extended_tagged_encoder_2</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>fec_extended_tagged_encoder_3</source_block_id>
-    <sink_block_id>blocks_char_to_float_1</sink_block_id>
+    <source_block_id>blocks_repack_bits_bb_0</source_block_id>
+    <sink_block_id>fec_extended_tagged_encoder_3</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>fec_extended_tagged_encoder_2</source_block_id>
-    <sink_block_id>blocks_char_to_float_1_0</sink_block_id>
+    <source_block_id>blocks_stream_to_tagged_stream_0_0</source_block_id>
+    <sink_block_id>blocks_repack_bits_bb_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>fec_extended_tagged_encoder_1</source_block_id>
-    <sink_block_id>blocks_char_to_float_1_0_0_0</sink_block_id>
+    <source_block_id>blocks_throttle_0</source_block_id>
+    <sink_block_id>blocks_stream_to_tagged_stream_0_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>fec_extended_tagged_encoder_0</source_block_id>
-    <sink_block_id>blocks_char_to_float_1_0_0</sink_block_id>
+    <source_block_id>blocks_vector_source_x_0_1_0</source_block_id>
+    <sink_block_id>blocks_throttle_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_char_to_float_1</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_3</sink_block_id>
+    <source_block_id>fec_extended_tagged_encoder_0</source_block_id>
+    <sink_block_id>blocks_char_to_float_1_0_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_char_to_float_1_0_0_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_1</sink_block_id>
+    <source_block_id>fec_extended_tagged_encoder_1</source_block_id>
+    <sink_block_id>blocks_char_to_float_1_0_0_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_char_to_float_1_0_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_0</sink_block_id>
+    <source_block_id>fec_extended_tagged_encoder_2</source_block_id>
+    <sink_block_id>blocks_char_to_float_1_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_char_to_float_1_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_2</sink_block_id>
+    <source_block_id>fec_extended_tagged_encoder_3</source_block_id>
+    <sink_block_id>blocks_char_to_float_1</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
diff --git a/gr-filter/examples/channelizer_demo.grc 
b/gr-filter/examples/channelizer_demo.grc
index 1891f33..d326500 100644
--- a/gr-filter/examples/channelizer_demo.grc
+++ b/gr-filter/examples/channelizer_demo.grc
@@ -1,22 +1,27 @@
-<?xml version='1.0' encoding='ASCII'?>
+<?xml version='1.0' encoding='utf-8'?>
+<?grc format='1' created='3.7.8rc1'?>
 <flow_graph>
   <timestamp>Thu Mar 27 13:33:38 2014</timestamp>
   <block>
     <key>options</key>
     <param>
-      <key>id</key>
-      <value>top_block</value>
+      <key>author</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>title</key>
-      <value></value>
+      <key>window_size</key>
+      <value>1280, 1024</value>
     </param>
     <param>
-      <key>author</key>
+      <key>category</key>
+      <value>Custom</value>
+    </param>
+    <param>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
@@ -24,16 +29,32 @@
       <value></value>
     </param>
     <param>
-      <key>window_size</key>
-      <value>1280, 1024</value>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(10, 10)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
       <key>generate_options</key>
       <value>qt_gui</value>
     </param>
     <param>
-      <key>category</key>
-      <value>Custom</value>
+      <key>id</key>
+      <value>top_block</value>
+    </param>
+    <param>
+      <key>max_nouts</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>realtime_scheduling</key>
+      <value></value>
     </param>
     <param>
       <key>run_options</key>
@@ -44,54 +65,90 @@
       <value>True</value>
     </param>
     <param>
-      <key>max_nouts</key>
-      <value>0</value>
+      <key>thread_safe_setters</key>
+      <value></value>
     </param>
     <param>
-      <key>realtime_scheduling</key>
+      <key>title</key>
+      <value></value>
+    </param>
+  </block>
+  <block>
+    <key>variable</key>
+    <param>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(10, 10)</value>
+      <value>(179, 9)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
       <value>samp_rate</value>
     </param>
     <param>
+      <key>value</key>
+      <value>32000</value>
+    </param>
+  </block>
+  <block>
+    <key>analog_sig_source_x</key>
+    <param>
+      <key>amp</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>value</key>
-      <value>32000</value>
+      <key>freq</key>
+      <value>0.03 * samp_rate</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(179, 9)</value>
+      <value>(12, 71)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>analog_sig_source_x</key>
     <param>
       <key>id</key>
       <value>analog_sig_source_x_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>offset</key>
+      <value>0</value>
     </param>
     <param>
       <key>type</key>
@@ -105,48 +162,56 @@
       <key>waveform</key>
       <value>analog.GR_COS_WAVE</value>
     </param>
-    <param>
-      <key>freq</key>
-      <value>0.03 * samp_rate</value>
-    </param>
+  </block>
+  <block>
+    <key>analog_sig_source_x</key>
     <param>
       <key>amp</key>
       <value>1</value>
     </param>
     <param>
-      <key>offset</key>
-      <value>0</value>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>freq</key>
+      <value>0.38 * samp_rate</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(12, 71)</value>
+      <value>(11, 177)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>analog_sig_source_x</key>
     <param>
       <key>id</key>
       <value>analog_sig_source_x_1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>offset</key>
+      <value>0</value>
     </param>
     <param>
       <key>type</key>
@@ -160,112 +225,297 @@
       <key>waveform</key>
       <value>analog.GR_COS_WAVE</value>
     </param>
+  </block>
+  <block>
+    <key>analog_sig_source_x</key>
+    <param>
+      <key>amp</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
     <param>
       <key>freq</key>
-      <value>0.38 * samp_rate</value>
+      <value>0.70*samp_rate</value>
     </param>
     <param>
-      <key>amp</key>
-      <value>1</value>
+      <key>_coordinate</key>
+      <value>(8, 282)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>analog_sig_source_x_2</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
       <key>offset</key>
       <value>0</value>
     </param>
     <param>
+      <key>type</key>
+      <value>complex</value>
+    </param>
+    <param>
+      <key>samp_rate</key>
+      <value>samp_rate</value>
+    </param>
+    <param>
+      <key>waveform</key>
+      <value>analog.GR_COS_WAVE</value>
+    </param>
+  </block>
+  <block>
+    <key>blocks_add_xx</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(228, 177)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
+      <key>id</key>
+      <value>blocks_add_xx_0</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>complex</value>
+    </param>
+    <param>
       <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>num_inputs</key>
+      <value>3</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
+    </param>
+  </block>
+  <block>
+    <key>pfb_channelizer_hier_ccf</key>
+    <param>
+      <key>atten</key>
+      <value>100</value>
+    </param>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>bw</key>
+      <value>0.6</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(11, 177)</value>
+      <value>(333, 163)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_freq_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_freq_sink_x_0</value>
+      <key>id</key>
+      <value>pfb_channelizer_hier_ccf_0</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>nchans</key>
+      <value>3</value>
+    </param>
+    <param>
+      <key>n_filterbanks</key>
+      <value>4</value>
+    </param>
+    <param>
+      <key>outchans</key>
+      <value>None</value>
+    </param>
+    <param>
+      <key>ripple</key>
+      <value>0.1</value>
+    </param>
+    <param>
+      <key>taps</key>
+      <value>None</value>
+    </param>
+    <param>
+      <key>tb</key>
+      <value>0.2</value>
+    </param>
+  </block>
+  <block>
+    <key>qtgui_freq_sink_x</key>
+    <param>
+      <key>autoscale</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>average</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>bw</key>
+      <value>samp_rate</value>
+    </param>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>fc</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>ctrlpanel</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>fftsize</key>
+      <value>1024</value>
     </param>
     <param>
-      <key>name</key>
+      <key>_coordinate</key>
+      <value>(352, 35)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
       <value></value>
     </param>
     <param>
-      <key>fftsize</key>
-      <value>1024</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>wintype</key>
-      <value>firdes.WIN_BLACKMAN_hARRIS</value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>fc</key>
-      <value>0</value>
+      <key>id</key>
+      <value>qtgui_freq_sink_x_0</value>
     </param>
     <param>
-      <key>bw</key>
-      <value>samp_rate</value>
+      <key>legend</key>
+      <value>True</value>
     </param>
     <param>
-      <key>autoscale</key>
-      <value>False</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-140</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>10</value>
+      <key>label1</key>
+      <value></value>
     </param>
     <param>
-      <key>nconnections</key>
+      <key>width1</key>
       <value>1</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value></value>
+      <key>color10</key>
+      <value>"dark blue"</value>
     </param>
     <param>
-      <key>label1</key>
+      <key>label10</key>
       <value></value>
     </param>
     <param>
-      <key>width1</key>
+      <key>width10</key>
       <value>1</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
       <key>label2</key>
@@ -276,12 +526,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>color3</key>
+      <value>"green"</value>
     </param>
     <param>
       <key>label3</key>
@@ -292,12 +542,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
       <key>label4</key>
@@ -308,12 +558,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
     <param>
       <key>label5</key>
@@ -324,12 +574,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
     <param>
       <key>label6</key>
@@ -340,12 +590,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
       <key>label7</key>
@@ -356,12 +606,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
     <param>
       <key>label8</key>
@@ -372,12 +622,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
     <param>
       <key>label9</key>
@@ -388,205 +638,171 @@
       <value>1</value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>name</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(352, 35)</value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>showports</key>
+      <value>True</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_add_xx</key>
     <param>
-      <key>id</key>
-      <value>blocks_add_xx_0</value>
+      <key>freqhalf</key>
+      <value>True</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>num_inputs</key>
-      <value>3</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>tr_tag</key>
+      <value>""</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>wintype</key>
+      <value>firdes.WIN_BLACKMAN_hARRIS</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(228, 177)</value>
+      <key>ymax</key>
+      <value>10</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>ymin</key>
+      <value>-140</value>
     </param>
   </block>
   <block>
-    <key>pfb_channelizer_hier_ccf</key>
-    <param>
-      <key>id</key>
-      <value>pfb_channelizer_hier_ccf_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>nchans</key>
-      <value>3</value>
-    </param>
+    <key>qtgui_freq_sink_x</key>
     <param>
-      <key>n_filterbanks</key>
-      <value>4</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
-      <key>taps</key>
-      <value>None</value>
+      <key>average</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>outchans</key>
-      <value>None</value>
+      <key>bw</key>
+      <value>samp_rate/3.0</value>
     </param>
     <param>
-      <key>atten</key>
-      <value>100</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>bw</key>
-      <value>0.6</value>
+      <key>fc</key>
+      <value>-samp_rate/3.0</value>
     </param>
     <param>
-      <key>tb</key>
-      <value>0.2</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>ripple</key>
-      <value>0.1</value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
     <param>
       <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>fftsize</key>
+      <value>1024</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(333, 163)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_freq_sink_x</key>
-    <param>
-      <key>id</key>
-      <value>qtgui_freq_sink_x_0_2</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
+      <value>(769, 287)</value>
     </param>
     <param>
-      <key>name</key>
+      <key>gui_hint</key>
       <value></value>
     </param>
     <param>
-      <key>fftsize</key>
-      <value>1024</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>wintype</key>
-      <value>firdes.WIN_BLACKMAN_hARRIS</value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>fc</key>
-      <value>0</value>
+      <key>id</key>
+      <value>qtgui_freq_sink_x_0_0</value>
     </param>
     <param>
-      <key>bw</key>
-      <value>samp_rate/3.0</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>autoscale</key>
-      <value>False</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-140</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>10</value>
+      <key>label1</key>
+      <value></value>
     </param>
     <param>
-      <key>nconnections</key>
+      <key>width1</key>
       <value>1</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value></value>
+      <key>color10</key>
+      <value>"dark blue"</value>
     </param>
     <param>
-      <key>label1</key>
+      <key>label10</key>
       <value></value>
     </param>
     <param>
-      <key>width1</key>
+      <key>width10</key>
       <value>1</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
       <key>label2</key>
@@ -597,12 +813,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>color3</key>
+      <value>"green"</value>
     </param>
     <param>
       <key>label3</key>
@@ -613,12 +829,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
       <key>label4</key>
@@ -629,12 +845,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
     <param>
       <key>label5</key>
@@ -645,12 +861,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
     <param>
       <key>label6</key>
@@ -661,12 +877,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
       <key>label7</key>
@@ -677,12 +893,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
     <param>
       <key>label8</key>
@@ -693,12 +909,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
     <param>
       <key>label9</key>
@@ -709,85 +925,141 @@
       <value>1</value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>name</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(768, 63)</value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>showports</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>freqhalf</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>tr_chan</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_freq_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_freq_sink_x_0_1</value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>tr_tag</key>
+      <value>""</value>
     </param>
     <param>
-      <key>name</key>
-      <value></value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>fftsize</key>
-      <value>1024</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
       <key>wintype</key>
       <value>firdes.WIN_BLACKMAN_hARRIS</value>
     </param>
     <param>
-      <key>fc</key>
-      <value>samp_rate/3.0</value>
+      <key>ymax</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ymin</key>
+      <value>-140</value>
+    </param>
+  </block>
+  <block>
+    <key>qtgui_freq_sink_x</key>
+    <param>
+      <key>autoscale</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>average</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>bw</key>
       <value>samp_rate/3.0</value>
     </param>
     <param>
-      <key>autoscale</key>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>fc</key>
+      <value>samp_rate/3.0</value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>ctrlpanel</key>
       <value>False</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-140</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>10</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>nconnections</key>
-      <value>1</value>
+      <key>fftsize</key>
+      <value>1024</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>_coordinate</key>
+      <value>(768, 177)</value>
     </param>
     <param>
       <key>gui_hint</key>
       <value></value>
     </param>
     <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>grid</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>qtgui_freq_sink_x_0_1</value>
+    </param>
+    <param>
+      <key>legend</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>alpha1</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color1</key>
+      <value>"blue"</value>
+    </param>
+    <param>
       <key>label1</key>
       <value></value>
     </param>
@@ -796,30 +1068,46 @@
       <value>1</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>color10</key>
+      <value>"dark blue"</value>
     </param>
     <param>
-      <key>label2</key>
+      <key>label10</key>
       <value></value>
     </param>
     <param>
-      <key>width2</key>
+      <key>width10</key>
       <value>1</value>
     </param>
     <param>
+      <key>alpha2</key>
+      <value>1.0</value>
+    </param>
+    <param>
       <key>color2</key>
       <value>"red"</value>
     </param>
     <param>
-      <key>alpha2</key>
+      <key>label2</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width2</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha3</key>
       <value>1.0</value>
     </param>
     <param>
+      <key>color3</key>
+      <value>"green"</value>
+    </param>
+    <param>
       <key>label3</key>
       <value></value>
     </param>
@@ -828,12 +1116,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
       <key>label4</key>
@@ -844,12 +1132,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
     <param>
       <key>label5</key>
@@ -860,12 +1148,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
     <param>
       <key>label6</key>
@@ -876,12 +1164,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
       <key>label7</key>
@@ -892,12 +1180,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
     <param>
       <key>label8</key>
@@ -908,14 +1196,14 @@
       <value>1</value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
-    </param>
-    <param>
-      <key>alpha8</key>
+      <key>alpha9</key>
       <value>1.0</value>
     </param>
     <param>
+      <key>color9</key>
+      <value>"dark green"</value>
+    </param>
+    <param>
       <key>label9</key>
       <value></value>
     </param>
@@ -924,154 +1212,171 @@
       <value>1</value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>name</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(768, 177)</value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>showports</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>freqhalf</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>tr_chan</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>analog_sig_source_x</key>
     <param>
-      <key>id</key>
-      <value>analog_sig_source_x_2</value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
+    </param>
+    <param>
+      <key>tr_tag</key>
+      <value>""</value>
     </param>
     <param>
       <key>type</key>
       <value>complex</value>
     </param>
     <param>
-      <key>samp_rate</key>
-      <value>samp_rate</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>waveform</key>
-      <value>analog.GR_COS_WAVE</value>
+      <key>wintype</key>
+      <value>firdes.WIN_BLACKMAN_hARRIS</value>
     </param>
     <param>
-      <key>freq</key>
-      <value>0.70*samp_rate</value>
+      <key>ymax</key>
+      <value>10</value>
     </param>
     <param>
-      <key>amp</key>
-      <value>1</value>
+      <key>ymin</key>
+      <value>-140</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_freq_sink_x</key>
     <param>
-      <key>offset</key>
-      <value>0</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>average</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>bw</key>
+      <value>samp_rate/3.0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>fc</key>
       <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(8, 282)</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_freq_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_freq_sink_x_0_0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>fftsize</key>
+      <value>1024</value>
     </param>
     <param>
-      <key>name</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(768, 63)</value>
     </param>
     <param>
-      <key>fftsize</key>
-      <value>1024</value>
+      <key>gui_hint</key>
+      <value></value>
     </param>
     <param>
-      <key>wintype</key>
-      <value>firdes.WIN_BLACKMAN_hARRIS</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>fc</key>
-      <value>-samp_rate/3.0</value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>bw</key>
-      <value>samp_rate/3.0</value>
+      <key>id</key>
+      <value>qtgui_freq_sink_x_0_2</value>
     </param>
     <param>
-      <key>autoscale</key>
+      <key>legend</key>
       <value>False</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-140</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>10</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>nconnections</key>
+      <key>label1</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width1</key>
       <value>1</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value></value>
+      <key>color10</key>
+      <value>"dark blue"</value>
     </param>
     <param>
-      <key>label1</key>
+      <key>label10</key>
       <value></value>
     </param>
     <param>
-      <key>width1</key>
+      <key>width10</key>
       <value>1</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
       <key>label2</key>
@@ -1082,12 +1387,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>color3</key>
+      <value>"green"</value>
     </param>
     <param>
       <key>label3</key>
@@ -1098,12 +1403,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
       <key>label4</key>
@@ -1114,12 +1419,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
     <param>
       <key>label5</key>
@@ -1130,12 +1435,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
     <param>
       <key>label6</key>
@@ -1146,12 +1451,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
       <key>label7</key>
@@ -1162,12 +1467,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
     <param>
       <key>label8</key>
@@ -1178,12 +1483,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
     <param>
       <key>label9</key>
@@ -1194,37 +1499,83 @@
       <value>1</value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>name</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(769, 287)</value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>showports</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>freqhalf</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>tr_chan</key>
       <value>0</value>
     </param>
+    <param>
+      <key>tr_level</key>
+      <value>0.0</value>
+    </param>
+    <param>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
+    </param>
+    <param>
+      <key>tr_tag</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>complex</value>
+    </param>
+    <param>
+      <key>update_time</key>
+      <value>0.10</value>
+    </param>
+    <param>
+      <key>wintype</key>
+      <value>firdes.WIN_BLACKMAN_hARRIS</value>
+    </param>
+    <param>
+      <key>ymax</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ymin</key>
+      <value>-140</value>
+    </param>
   </block>
   <connection>
+    <source_block_id>analog_sig_source_x_0</source_block_id>
+    <sink_block_id>blocks_add_xx_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
+  <connection>
     <source_block_id>analog_sig_source_x_1</source_block_id>
     <sink_block_id>blocks_add_xx_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>1</sink_key>
   </connection>
   <connection>
-    <source_block_id>analog_sig_source_x_0</source_block_id>
+    <source_block_id>analog_sig_source_x_2</source_block_id>
     <sink_block_id>blocks_add_xx_0</sink_block_id>
     <source_key>0</source_key>
-    <sink_key>0</sink_key>
+    <sink_key>2</sink_key>
   </connection>
   <connection>
     <source_block_id>blocks_add_xx_0</source_block_id>
@@ -1233,12 +1584,6 @@
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>analog_sig_source_x_2</source_block_id>
-    <sink_block_id>blocks_add_xx_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>2</sink_key>
-  </connection>
-  <connection>
     <source_block_id>blocks_add_xx_0</source_block_id>
     <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
     <source_key>0</source_key>
diff --git a/gr-filter/examples/resampler_demo.grc 
b/gr-filter/examples/resampler_demo.grc
index 17875f6..446743a 100644
--- a/gr-filter/examples/resampler_demo.grc
+++ b/gr-filter/examples/resampler_demo.grc
@@ -1,22 +1,27 @@
-<?xml version='1.0' encoding='ASCII'?>
+<?xml version='1.0' encoding='utf-8'?>
+<?grc format='1' created='3.7.8rc1'?>
 <flow_graph>
   <timestamp>Sat Jul 12 13:34:43 2014</timestamp>
   <block>
     <key>options</key>
     <param>
-      <key>id</key>
-      <value>resampler_demo</value>
+      <key>author</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>title</key>
-      <value></value>
+      <key>window_size</key>
+      <value>1280, 1024</value>
     </param>
     <param>
-      <key>author</key>
+      <key>category</key>
+      <value>Custom</value>
+    </param>
+    <param>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
@@ -24,24 +29,24 @@
       <value></value>
     </param>
     <param>
-      <key>window_size</key>
-      <value>1280, 1024</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>generate_options</key>
-      <value>qt_gui</value>
+      <key>_coordinate</key>
+      <value>(-2, 0)</value>
     </param>
     <param>
-      <key>category</key>
-      <value>Custom</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>run_options</key>
-      <value>prompt</value>
+      <key>generate_options</key>
+      <value>qt_gui</value>
     </param>
     <param>
-      <key>run</key>
-      <value>True</value>
+      <key>id</key>
+      <value>resampler_demo</value>
     </param>
     <param>
       <key>max_nouts</key>
@@ -52,110 +57,100 @@
       <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>run_options</key>
+      <value>prompt</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(-2, 0)</value>
+      <key>run</key>
+      <value>True</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>thread_safe_setters</key>
+      <value></value>
+    </param>
+    <param>
+      <key>title</key>
+      <value></value>
     </param>
   </block>
   <block>
-    <key>variable</key>
+    <key>variable_qtgui_label</key>
     <param>
-      <key>id</key>
-      <value>nphases</value>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>.45</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>value</key>
-      <value>32</value>
+      <key>formatter</key>
+      <value>lambda x: "%0.2f"%x</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(431, -1)</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(653, -1)</value>
+      <key>gui_hint</key>
+      <value>0,2,1,1</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>rs_taps</value>
+      <value>frac_bw</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label</key>
+      <value>Fractional Bandwidth</value>
     </param>
     <param>
-      <key>value</key>
-      <value>firdes.low_pass(nphases, nphases, frac_bw, 0.5-frac_bw)</value>
+      <key>type</key>
+      <value>real</value>
     </param>
+  </block>
+  <block>
+    <key>variable_qtgui_label</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(741, -1)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>import</key>
-    <param>
-      <key>id</key>
-      <value>import_0</value>
+      <key>value</key>
+      <value>48000</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>import</key>
-      <value>import math</value>
+      <key>formatter</key>
+      <value>None</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(291, 0)</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(0, 74)</value>
+      <key>gui_hint</key>
+      <value>0,1,1,1</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_label</key>
     <param>
       <key>id</key>
       <value>new_rate</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
       <key>label</key>
       <value>Resampling Rate</value>
     </param>
@@ -163,208 +158,210 @@
       <key>type</key>
       <value>real</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>value</key>
-      <value>48000</value>
-    </param>
-    <param>
-      <key>formatter</key>
-      <value>None</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>0,1,1,1</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(291, 0)</value>
+      <value>(653, -1)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>analog_sig_source_x</key>
     <param>
       <key>id</key>
-      <value>analog_sig_source_x_0</value>
+      <value>nphases</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>value</key>
+      <value>32</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>type</key>
-      <value>float</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>samp_rate</key>
-      <value>samp_rate</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>waveform</key>
-      <value>analog.GR_TRI_WAVE</value>
+      <key>_coordinate</key>
+      <value>(741, -1)</value>
     </param>
     <param>
-      <key>freq</key>
-      <value>0.05</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>amp</key>
-      <value>2</value>
+      <key>id</key>
+      <value>rs_taps</value>
     </param>
     <param>
-      <key>offset</key>
-      <value>0</value>
+      <key>value</key>
+      <value>firdes.low_pass(nphases, nphases, frac_bw, 0.5-frac_bw)</value>
     </param>
+  </block>
+  <block>
+    <key>variable_qtgui_label</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>value</key>
+      <value>44100</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>formatter</key>
+      <value>None</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(4, 137)</value>
+      <value>(162, 0)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>0,0,1,1</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_label</key>
     <param>
       <key>id</key>
-      <value>frac_bw</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>samp_rate</value>
     </param>
     <param>
       <key>label</key>
-      <value>Fractional Bandwidth</value>
+      <value>Sampling Rate</value>
     </param>
     <param>
       <key>type</key>
       <value>real</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_add_const_vxx</key>
     <param>
-      <key>value</key>
-      <value>.45</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>formatter</key>
-      <value>lambda x: "%0.2f"%x</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>0,2,1,1</value>
+      <key>const</key>
+      <value>-1.0</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(431, -1)</value>
+      <value>(175, 169)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_add_const_vxx</key>
     <param>
       <key>id</key>
       <value>adder</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
       <key>type</key>
       <value>float</value>
     </param>
     <param>
-      <key>const</key>
-      <value>-1.0</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
       <key>vlen</key>
       <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>analog_frequency_modulator_fc</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(175, 169)</value>
+      <value>(478, 169)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_throttle</key>
     <param>
       <key>id</key>
-      <value>throttle</value>
+      <value>analog_frequency_modulator_fc_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>float</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>samples_per_second</key>
-      <value>samp_rate</value>
+      <key>sensitivity</key>
+      <value>math.pi</value>
     </param>
+  </block>
+  <block>
+    <key>analog_sig_source_x</key>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>amp</key>
+      <value>2</value>
     </param>
     <param>
-      <key>ignoretag</key>
-      <value>True</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
@@ -372,248 +369,249 @@
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>freq</key>
+      <value>0.05</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(307, 169)</value>
+      <value>(4, 137)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>analog_frequency_modulator_fc</key>
     <param>
       <key>id</key>
-      <value>analog_frequency_modulator_fc_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>sensitivity</key>
-      <value>math.pi</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
+      <value>analog_sig_source_x_0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
       <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>offset</key>
       <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(478, 169)</value>
+      <key>type</key>
+      <value>float</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>samp_rate</key>
+      <value>samp_rate</value>
+    </param>
+    <param>
+      <key>waveform</key>
+      <value>analog.GR_TRI_WAVE</value>
     </param>
   </block>
   <block>
-    <key>variable_qtgui_label</key>
+    <key>import</key>
     <param>
-      <key>id</key>
-      <value>samp_rate</value>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Sampling Rate</value>
+      <key>_coordinate</key>
+      <value>(0, 74)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>real</value>
+      <key>id</key>
+      <value>import_0</value>
     </param>
     <param>
-      <key>value</key>
-      <value>44100</value>
+      <key>import</key>
+      <value>import math</value>
     </param>
+  </block>
+  <block>
+    <key>pfb_arb_resampler_xxx</key>
     <param>
-      <key>formatter</key>
-      <value>None</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>0,0,1,1</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(162, 0)</value>
+      <value>(343, 253)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>pfb_arb_resampler_xxx</key>
     <param>
       <key>id</key>
       <value>pfb_arb_resampler_xxx_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>ccf</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>rrate</key>
-      <value>float(new_rate)/samp_rate</value>
+      <key>nfilts</key>
+      <value>nphases</value>
     </param>
     <param>
-      <key>taps</key>
-      <value>rs_taps</value>
+      <key>rrate</key>
+      <value>float(new_rate)/samp_rate</value>
     </param>
     <param>
-      <key>nfilts</key>
-      <value>nphases</value>
+      <key>samp_delay</key>
+      <value>0</value>
     </param>
     <param>
       <key>atten</key>
       <value>100</value>
     </param>
     <param>
-      <key>samp_delay</key>
-      <value>0</value>
+      <key>taps</key>
+      <value>rs_taps</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>type</key>
+      <value>ccf</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_freq_sink_x</key>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>average</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>bw</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(343, 253)</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>fc</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_freq_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_freq_sink_x_0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>name</key>
-      <value>Original Spectrum</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>fftsize</key>
       <value>1024</value>
     </param>
     <param>
-      <key>wintype</key>
-      <value>firdes.WIN_BLACKMAN_hARRIS</value>
+      <key>_coordinate</key>
+      <value>(660, 135)</value>
     </param>
     <param>
-      <key>fc</key>
-      <value>0</value>
+      <key>gui_hint</key>
+      <value>1,0,1,3</value>
     </param>
     <param>
-      <key>bw</key>
-      <value>samp_rate</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
       <key>grid</key>
       <value>False</value>
     </param>
     <param>
-      <key>autoscale</key>
+      <key>id</key>
+      <value>qtgui_freq_sink_x_0</value>
+    </param>
+    <param>
+      <key>legend</key>
       <value>False</value>
     </param>
     <param>
-      <key>average</key>
+      <key>alpha1</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-140</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>10</value>
+      <key>label1</key>
+      <value>Original Spectrum</value>
     </param>
     <param>
-      <key>nconnections</key>
+      <key>width1</key>
       <value>1</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>1,0,1,3</value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>showports</key>
-      <value>True</value>
+      <key>color10</key>
+      <value>"dark blue"</value>
     </param>
     <param>
-      <key>label1</key>
-      <value>Original Spectrum</value>
+      <key>label10</key>
+      <value></value>
     </param>
     <param>
-      <key>width1</key>
+      <key>width10</key>
       <value>1</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
       <key>label2</key>
@@ -624,12 +622,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>color3</key>
+      <value>"green"</value>
     </param>
     <param>
       <key>label3</key>
@@ -640,12 +638,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
       <key>label4</key>
@@ -656,12 +654,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
     <param>
       <key>label5</key>
@@ -672,12 +670,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
     <param>
       <key>label6</key>
@@ -688,12 +686,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
       <key>label7</key>
@@ -704,12 +702,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
     <param>
       <key>label8</key>
@@ -720,12 +718,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
     <param>
       <key>label9</key>
@@ -736,139 +734,171 @@
       <value>1</value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label10</key>
-      <value></value>
+      <key>name</key>
+      <value>Original Spectrum</value>
     </param>
     <param>
-      <key>width10</key>
+      <key>nconnections</key>
       <value>1</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"dark blue"</value>
+      <key>showports</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>freqhalf</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>tr_chan</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>tr_level</key>
+      <value>0.0</value>
+    </param>
+    <param>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
+    </param>
+    <param>
+      <key>tr_tag</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>complex</value>
+    </param>
+    <param>
+      <key>update_time</key>
+      <value>0.10</value>
+    </param>
+    <param>
+      <key>wintype</key>
+      <value>firdes.WIN_BLACKMAN_hARRIS</value>
+    </param>
+    <param>
+      <key>ymax</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ymin</key>
+      <value>-140</value>
+    </param>
+  </block>
+  <block>
+    <key>qtgui_freq_sink_x</key>
+    <param>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alpha10</key>
+      <key>average</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>bw</key>
+      <value>new_rate</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
+      <key>fc</key>
       <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(660, 135)</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_freq_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_freq_sink_x_0_0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>name</key>
-      <value>Resampled Spectrum</value>
-    </param>
-    <param>
       <key>fftsize</key>
       <value>1024</value>
     </param>
     <param>
-      <key>wintype</key>
-      <value>firdes.WIN_BLACKMAN_hARRIS</value>
+      <key>_coordinate</key>
+      <value>(636, 253)</value>
     </param>
     <param>
-      <key>fc</key>
-      <value>0</value>
+      <key>gui_hint</key>
+      <value>2,0,1,3</value>
     </param>
     <param>
-      <key>bw</key>
-      <value>new_rate</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
       <key>grid</key>
       <value>False</value>
     </param>
     <param>
-      <key>autoscale</key>
+      <key>id</key>
+      <value>qtgui_freq_sink_x_0_0</value>
+    </param>
+    <param>
+      <key>legend</key>
       <value>False</value>
     </param>
     <param>
-      <key>average</key>
+      <key>alpha1</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-140</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>10</value>
+      <key>label1</key>
+      <value>Resampled Spectrum</value>
     </param>
     <param>
-      <key>nconnections</key>
+      <key>width1</key>
       <value>1</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>2,0,1,3</value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>showports</key>
-      <value>True</value>
+      <key>color10</key>
+      <value>"dark blue"</value>
     </param>
     <param>
-      <key>label1</key>
-      <value>Original Spectrum</value>
+      <key>label10</key>
+      <value></value>
     </param>
     <param>
-      <key>width1</key>
+      <key>width10</key>
       <value>1</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
       <key>label2</key>
@@ -879,12 +909,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>color3</key>
+      <value>"green"</value>
     </param>
     <param>
       <key>label3</key>
@@ -895,12 +925,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
       <key>label4</key>
@@ -911,12 +941,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
     <param>
       <key>label5</key>
@@ -927,12 +957,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
     <param>
       <key>label6</key>
@@ -943,12 +973,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
       <key>label7</key>
@@ -959,12 +989,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
     <param>
       <key>label8</key>
@@ -975,12 +1005,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
     <param>
       <key>label9</key>
@@ -991,57 +1021,124 @@
       <value>1</value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label10</key>
-      <value></value>
+      <key>name</key>
+      <value>Resampled Spectrum</value>
     </param>
     <param>
-      <key>width10</key>
+      <key>nconnections</key>
       <value>1</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"dark blue"</value>
+      <key>showports</key>
+      <value>True</value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>freqhalf</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>tr_chan</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>tr_level</key>
+      <value>0.0</value>
+    </param>
+    <param>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
+    </param>
+    <param>
+      <key>tr_tag</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>complex</value>
+    </param>
+    <param>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
+      <key>wintype</key>
+      <value>firdes.WIN_BLACKMAN_hARRIS</value>
+    </param>
+    <param>
+      <key>ymax</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ymin</key>
+      <value>-140</value>
+    </param>
+  </block>
+  <block>
+    <key>blocks_throttle</key>
+    <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(307, 169)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
+      <key>id</key>
+      <value>throttle</value>
+    </param>
+    <param>
+      <key>ignoretag</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(636, 253)</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>samples_per_second</key>
+      <value>samp_rate</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>float</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
     </param>
   </block>
   <connection>
-    <source_block_id>throttle</source_block_id>
-    <sink_block_id>analog_frequency_modulator_fc_0</sink_block_id>
+    <source_block_id>adder</source_block_id>
+    <sink_block_id>throttle</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
@@ -1064,14 +1161,14 @@
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>adder</source_block_id>
-    <sink_block_id>throttle</sink_block_id>
+    <source_block_id>pfb_arb_resampler_xxx_0</source_block_id>
+    <sink_block_id>qtgui_freq_sink_x_0_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>pfb_arb_resampler_xxx_0</source_block_id>
-    <sink_block_id>qtgui_freq_sink_x_0_0</sink_block_id>
+    <source_block_id>throttle</source_block_id>
+    <sink_block_id>analog_frequency_modulator_fc_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
diff --git a/gr-uhd/examples/grc/uhd_dpsk_mod.grc 
b/gr-uhd/examples/grc/uhd_dpsk_mod.grc
index be6ec55..c047404 100644
--- a/gr-uhd/examples/grc/uhd_dpsk_mod.grc
+++ b/gr-uhd/examples/grc/uhd_dpsk_mod.grc
@@ -1,47 +1,52 @@
-<?xml version='1.0' encoding='ASCII'?>
+<?xml version='1.0' encoding='utf-8'?>
+<?grc format='1' created='3.7.8rc1'?>
 <flow_graph>
   <timestamp>Sat Jul 12 15:58:18 2014</timestamp>
   <block>
     <key>options</key>
     <param>
-      <key>id</key>
-      <value>uhd_dpsk_mod</value>
+      <key>author</key>
+      <value>Example</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>title</key>
-      <value>UHD DPSK Modulation</value>
+      <key>window_size</key>
+      <value>1280, 1024</value>
     </param>
     <param>
-      <key>author</key>
-      <value>Example</value>
+      <key>category</key>
+      <value>Custom</value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>description</key>
       <value>Generate a DPSK signal</value>
     </param>
     <param>
-      <key>window_size</key>
-      <value>1280, 1024</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>generate_options</key>
-      <value>qt_gui</value>
+      <key>_coordinate</key>
+      <value>(-5, -2)</value>
     </param>
     <param>
-      <key>category</key>
-      <value>Custom</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>run_options</key>
-      <value>prompt</value>
+      <key>generate_options</key>
+      <value>qt_gui</value>
     </param>
     <param>
-      <key>run</key>
-      <value>True</value>
+      <key>id</key>
+      <value>uhd_dpsk_mod</value>
     </param>
     <param>
       <key>max_nouts</key>
@@ -52,91 +57,96 @@
       <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>run_options</key>
+      <value>prompt</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(-5, -2)</value>
+      <key>run</key>
+      <value>True</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>thread_safe_setters</key>
+      <value></value>
+    </param>
+    <param>
+      <key>title</key>
+      <value>UHD DPSK Modulation</value>
     </param>
   </block>
   <block>
-    <key>variable</key>
+    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>samps_per_sym</value>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>0.1</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>value</key>
-      <value>8</value>
+      <key>_coordinate</key>
+      <value>(916, 115)</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>gui_hint</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(743, 124)</value>
-    </param>
-    <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>rolloff</value>
+      <value>ampl</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label</key>
+      <value>Amplitude</value>
     </param>
     <param>
-      <key>value</key>
-      <value>.35</value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(566, 548)</value>
+      <key>start</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>step</key>
+      <value>0.01</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>nfilts</value>
+      <key>stop</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>rangeType</key>
+      <value>float</value>
     </param>
     <param>
-      <key>value</key>
-      <value>32</value>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
       <value>(653, 548)</value>
     </param>
@@ -144,405 +154,379 @@
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>parameter</key>
     <param>
       <key>id</key>
-      <value>tx_gain</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>label</key>
-      <value>Default TX Gain</value>
+      <value>nfilts</value>
     </param>
     <param>
       <key>value</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>eng_float</value>
+      <value>32</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>short_id</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(968, 0)</value>
+      <value>(566, 548)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>parameter</key>
     <param>
       <key>id</key>
-      <value>freq</value>
+      <value>rolloff</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>value</key>
+      <value>.35</value>
     </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
     <param>
-      <key>label</key>
-      <value>Default Frequency</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>value</key>
-      <value>2.45e9</value>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>eng_float</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>short_id</key>
-      <value>f</value>
+      <key>_coordinate</key>
+      <value>(130, 547)</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>gui_hint</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(634, 0)</value>
-    </param>
-    <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>parameter</key>
     <param>
       <key>id</key>
-      <value>samp_rate</value>
+      <value>rx_freq_off</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label</key>
+      <value>Rx Freq Offset (Hz)</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Sample Rate</value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>value</key>
-      <value>1e6</value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>type</key>
-      <value>eng_float</value>
+      <key>start</key>
+      <value>-50e3</value>
     </param>
     <param>
-      <key>short_id</key>
-      <value>s</value>
+      <key>step</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>stop</key>
+      <value>50e3</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(508, 0)</value>
+      <key>rangeType</key>
+      <value>float</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
   </block>
   <block>
-    <key>parameter</key>
+    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>address0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>label</key>
-      <value>IP Address, Dev 0</value>
+      <key>_coordinate</key>
+      <value>(743, 124)</value>
     </param>
     <param>
-      <key>value</key>
-      <value>addr=192.168.10.2</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>string</value>
+      <key>id</key>
+      <value>samps_per_sym</value>
     </param>
     <param>
-      <key>short_id</key>
-      <value></value>
+      <key>value</key>
+      <value>8</value>
     </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(162, 0)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>parameter</key>
-    <param>
-      <key>id</key>
-      <value>freq_offset</value>
+      <key>value</key>
+      <value>1.982e9</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Rx Frequency Offset</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>eng_float</value>
-    </param>
-    <param>
-      <key>short_id</key>
-      <value>o</value>
+      <key>_coordinate</key>
+      <value>(5, 545)</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>gui_hint</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(789, 0)</value>
-    </param>
-    <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>parameter</key>
     <param>
       <key>id</key>
-      <value>rx_gain</value>
+      <value>tun_freq</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label</key>
+      <value>UHD Freq (Hz)</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Default RX Gain</value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>value</key>
-      <value>0</value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>type</key>
-      <value>eng_float</value>
+      <key>start</key>
+      <value>1.9e9</value>
     </param>
     <param>
-      <key>short_id</key>
-      <value></value>
+      <key>step</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>stop</key>
+      <value>2.5e9</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1102, 0)</value>
+      <key>rangeType</key>
+      <value>float</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
   </block>
   <block>
-    <key>import</key>
+    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>import_0</value>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>0</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>import</key>
-      <value>from gnuradio import digital</value>
+      <key>_coordinate</key>
+      <value>(391, 546)</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>gui_hint</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(169, 93)</value>
-    </param>
-    <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_multiply_const_vxx</key>
     <param>
       <key>id</key>
-      <value>blocks_multiply_const_vxx_0</value>
+      <value>tun_rx_gain</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label</key>
+      <value>UHD Rx Gain</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>const</key>
-      <value>ampl</value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>vlen</key>
+      <key>start</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>step</key>
       <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>stop</key>
+      <value>30</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>rangeType</key>
+      <value>float</value>
+    </param>
+    <param>
+      <key>widget</key>
+      <value>counter_slider</value>
+    </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
+    <param>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>value</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(396, 161)</value>
+      <value>(277, 546)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value></value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
     <param>
       <key>id</key>
-      <value>ampl</value>
+      <value>tun_tx_gain</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label</key>
+      <value>UHD Tx Gain</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Amplitude</value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>value</key>
-      <value>0.1</value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
       <key>start</key>
       <value>0</value>
     </param>
     <param>
-      <key>stop</key>
+      <key>step</key>
       <value>1</value>
     </param>
     <param>
-      <key>step</key>
-      <value>0.01</value>
+      <key>stop</key>
+      <value>30</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>rangeType</key>
+      <value>float</value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
+  </block>
+  <block>
+    <key>parameter</key>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>gui_hint</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(916, 115)</value>
+      <value>(162, 0)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>parameter</key>
     <param>
       <key>id</key>
-      <value>address1</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>address0</value>
     </param>
     <param>
       <key>label</key>
-      <value>IP Address, Dev 1</value>
+      <value>IP Address, Dev 0</value>
     </param>
     <param>
-      <key>value</key>
-      <value>addr=192.168.10.2</value>
+      <key>short_id</key>
+      <value></value>
     </param>
     <param>
       <key>type</key>
       <value>string</value>
     </param>
     <param>
-      <key>short_id</key>
-      <value></value>
+      <key>value</key>
+      <value>addr=192.168.10.2</value>
     </param>
+  </block>
+  <block>
+    <key>parameter</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
       <value>(322, 0)</value>
     </param>
@@ -550,743 +534,795 @@
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>uhd_usrp_sink</key>
     <param>
       <key>id</key>
-      <value>uhd_usrp_sink_0</value>
+      <value>address1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label</key>
+      <value>IP Address, Dev 1</value>
+    </param>
+    <param>
+      <key>short_id</key>
+      <value></value>
     </param>
     <param>
       <key>type</key>
-      <value>fc32</value>
+      <value>string</value>
     </param>
     <param>
-      <key>otw</key>
-      <value></value>
+      <key>value</key>
+      <value>addr=192.168.10.2</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_multiply_const_vxx</key>
     <param>
-      <key>stream_args</key>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>stream_chans</key>
-      <value>[]</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>dev_addr</key>
-      <value>address0</value>
+      <key>const</key>
+      <value>ampl</value>
     </param>
     <param>
-      <key>dev_args</key>
-      <value>""</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>sync</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>clock_rate</key>
-      <value>0.0</value>
+      <key>_coordinate</key>
+      <value>(396, 161)</value>
     </param>
     <param>
-      <key>num_mboards</key>
-      <value>1</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>clock_source0</key>
-      <value></value>
+      <key>id</key>
+      <value>blocks_multiply_const_vxx_0</value>
     </param>
     <param>
-      <key>time_source0</key>
-      <value></value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>sd_spec0</key>
-      <value>B:0</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>clock_source1</key>
-      <value></value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>time_source1</key>
-      <value></value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_uchar_to_float</key>
     <param>
-      <key>sd_spec1</key>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>clock_source2</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>time_source2</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>sd_spec2</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>clock_source3</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(747, 431)</value>
     </param>
     <param>
-      <key>time_source3</key>
-      <value></value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>sd_spec3</key>
-      <value></value>
+      <key>id</key>
+      <value>blocks_uchar_to_float_0</value>
     </param>
     <param>
-      <key>clock_source4</key>
-      <value></value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>time_source4</key>
-      <value></value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_unpacked_to_packed_xx</key>
     <param>
-      <key>sd_spec4</key>
-      <value></value>
+      <key>bits_per_chunk</key>
+      <value>1</value>
     </param>
     <param>
-      <key>clock_source5</key>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>time_source5</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>sd_spec5</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>clock_source6</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>time_source6</key>
-      <value></value>
+      <key>endianness</key>
+      <value>gr.GR_LSB_FIRST</value>
     </param>
     <param>
-      <key>sd_spec6</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(542, 420)</value>
     </param>
     <param>
-      <key>clock_source7</key>
-      <value></value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>time_source7</key>
-      <value></value>
+      <key>id</key>
+      <value>blocks_unpacked_to_packed_xx_0</value>
     </param>
     <param>
-      <key>sd_spec7</key>
-      <value></value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>nchan</key>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>num_ports</key>
       <value>1</value>
     </param>
     <param>
-      <key>samp_rate</key>
-      <value>samp_rate</value>
+      <key>type</key>
+      <value>byte</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_vector_source_x</key>
     <param>
-      <key>center_freq0</key>
-      <value>tun_freq</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>gain0</key>
-      <value>tun_rx_gain</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>ant0</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>bw0</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>center_freq1</key>
-      <value>0</value>
+      <key>_coordinate</key>
+      <value>(6, 142)</value>
     </param>
     <param>
-      <key>gain1</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant1</key>
-      <value></value>
+      <key>id</key>
+      <value>blocks_vector_source_x_0</value>
     </param>
     <param>
-      <key>bw1</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq2</key>
+      <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain2</key>
-      <value>0</value>
+      <key>type</key>
+      <value>byte</value>
     </param>
     <param>
-      <key>ant2</key>
-      <value></value>
+      <key>repeat</key>
+      <value>True</value>
     </param>
     <param>
-      <key>bw2</key>
-      <value>0</value>
+      <key>tags</key>
+      <value>[]</value>
     </param>
     <param>
-      <key>center_freq3</key>
-      <value>0</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
     <param>
-      <key>gain3</key>
-      <value>0</value>
+      <key>vector</key>
+      <value>range(256)</value>
     </param>
+  </block>
+  <block>
+    <key>digital_dxpsk_demod</key>
     <param>
-      <key>ant3</key>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>bw3</key>
-      <value>0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>center_freq4</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>gain4</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>ant4</key>
-      <value></value>
+      <key>excess_bw</key>
+      <value>0.35</value>
     </param>
     <param>
-      <key>bw4</key>
-      <value>0</value>
+      <key>freq_bw</key>
+      <value>6.28/100.0</value>
     </param>
     <param>
-      <key>center_freq5</key>
-      <value>0</value>
+      <key>_coordinate</key>
+      <value>(294, 375)</value>
     </param>
     <param>
-      <key>gain5</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant5</key>
-      <value></value>
+      <key>mod_code</key>
+      <value>"gray"</value>
     </param>
     <param>
-      <key>bw5</key>
-      <value>0</value>
+      <key>id</key>
+      <value>digital_dxpsk_demod_0</value>
     </param>
     <param>
-      <key>center_freq6</key>
-      <value>0</value>
+      <key>log</key>
+      <value>False</value>
     </param>
     <param>
-      <key>gain6</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant6</key>
-      <value></value>
-    </param>
-    <param>
-      <key>bw6</key>
+      <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq7</key>
-      <value>0</value>
+      <key>phase_bw</key>
+      <value>6.28/100.0</value>
     </param>
     <param>
-      <key>gain7</key>
-      <value>0</value>
+      <key>samples_per_symbol</key>
+      <value>samps_per_sym</value>
     </param>
     <param>
-      <key>ant7</key>
-      <value></value>
+      <key>sync_out</key>
+      <value>True</value>
     </param>
     <param>
-      <key>bw7</key>
-      <value>0</value>
+      <key>timing_bw</key>
+      <value>6.28/100.0</value>
     </param>
     <param>
-      <key>center_freq8</key>
-      <value>0</value>
+      <key>type</key>
+      <value>dqpsk</value>
     </param>
     <param>
-      <key>gain8</key>
-      <value>0</value>
+      <key>verbose</key>
+      <value>False</value>
     </param>
+  </block>
+  <block>
+    <key>digital_dxpsk_mod</key>
     <param>
-      <key>ant8</key>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>bw8</key>
-      <value>0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>center_freq9</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>gain9</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>ant9</key>
-      <value></value>
+      <key>excess_bw</key>
+      <value>0.35</value>
     </param>
     <param>
-      <key>bw9</key>
-      <value>0</value>
+      <key>_coordinate</key>
+      <value>(204, 138)</value>
     </param>
     <param>
-      <key>center_freq10</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain10</key>
-      <value>0</value>
+      <key>mod_code</key>
+      <value>"gray"</value>
     </param>
     <param>
-      <key>ant10</key>
-      <value></value>
+      <key>id</key>
+      <value>digital_dxpsk_mod_0</value>
     </param>
     <param>
-      <key>bw10</key>
-      <value>0</value>
+      <key>log</key>
+      <value>False</value>
     </param>
     <param>
-      <key>center_freq11</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain11</key>
+      <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant11</key>
-      <value></value>
+      <key>samples_per_symbol</key>
+      <value>samps_per_sym</value>
     </param>
     <param>
-      <key>bw11</key>
-      <value>0</value>
+      <key>type</key>
+      <value>dqpsk</value>
     </param>
     <param>
-      <key>center_freq12</key>
-      <value>0</value>
+      <key>verbose</key>
+      <value>False</value>
     </param>
+  </block>
+  <block>
+    <key>parameter</key>
     <param>
-      <key>gain12</key>
-      <value>0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>ant12</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>bw12</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>center_freq13</key>
-      <value>0</value>
+      <key>_coordinate</key>
+      <value>(634, 0)</value>
     </param>
     <param>
-      <key>gain13</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant13</key>
-      <value></value>
+      <key>id</key>
+      <value>freq</value>
     </param>
     <param>
-      <key>bw13</key>
-      <value>0</value>
+      <key>label</key>
+      <value>Default Frequency</value>
     </param>
     <param>
-      <key>center_freq14</key>
-      <value>0</value>
+      <key>short_id</key>
+      <value>f</value>
     </param>
     <param>
-      <key>gain14</key>
-      <value>0</value>
+      <key>type</key>
+      <value>eng_float</value>
     </param>
     <param>
-      <key>ant14</key>
-      <value></value>
+      <key>value</key>
+      <value>2.45e9</value>
     </param>
+  </block>
+  <block>
+    <key>parameter</key>
     <param>
-      <key>bw14</key>
-      <value>0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>center_freq15</key>
-      <value>0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>gain15</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>ant15</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(789, 0)</value>
     </param>
     <param>
-      <key>bw15</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq16</key>
-      <value>0</value>
+      <key>id</key>
+      <value>freq_offset</value>
     </param>
     <param>
-      <key>gain16</key>
-      <value>0</value>
+      <key>label</key>
+      <value>Rx Frequency Offset</value>
     </param>
     <param>
-      <key>ant16</key>
-      <value></value>
+      <key>short_id</key>
+      <value>o</value>
     </param>
     <param>
-      <key>bw16</key>
-      <value>0</value>
+      <key>type</key>
+      <value>eng_float</value>
     </param>
     <param>
-      <key>center_freq17</key>
+      <key>value</key>
       <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>import</key>
     <param>
-      <key>gain17</key>
-      <value>0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>ant17</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>bw17</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>center_freq18</key>
-      <value>0</value>
+      <key>_coordinate</key>
+      <value>(169, 93)</value>
     </param>
     <param>
-      <key>gain18</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant18</key>
-      <value></value>
+      <key>id</key>
+      <value>import_0</value>
     </param>
     <param>
-      <key>bw18</key>
-      <value>0</value>
+      <key>import</key>
+      <value>from gnuradio import digital</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_const_sink_x</key>
     <param>
-      <key>center_freq19</key>
-      <value>0</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
-      <key>gain19</key>
-      <value>0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>ant19</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>bw19</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>center_freq20</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>False</value>
     </param>
     <param>
-      <key>gain20</key>
-      <value>0</value>
+      <key>_coordinate</key>
+      <value>(1, 367)</value>
     </param>
     <param>
-      <key>ant20</key>
+      <key>gui_hint</key>
       <value></value>
     </param>
     <param>
-      <key>bw20</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>center_freq21</key>
-      <value>0</value>
+      <key>_rotation</key>
+      <value>180</value>
     </param>
     <param>
-      <key>gain21</key>
-      <value>0</value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>ant21</key>
-      <value></value>
+      <key>id</key>
+      <value>qtgui_const_sink_x_0</value>
     </param>
     <param>
-      <key>bw21</key>
-      <value>0</value>
+      <key>legend</key>
+      <value>True</value>
     </param>
     <param>
-      <key>center_freq22</key>
-      <value>0</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>gain22</key>
-      <value>0</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>ant22</key>
+      <key>label1</key>
       <value></value>
     </param>
     <param>
-      <key>bw22</key>
+      <key>marker1</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq23</key>
+      <key>style1</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain23</key>
-      <value>0</value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>ant23</key>
-      <value></value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>bw23</key>
-      <value>0</value>
+      <key>color10</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>center_freq24</key>
-      <value>0</value>
+      <key>label10</key>
+      <value></value>
     </param>
     <param>
-      <key>gain24</key>
+      <key>marker10</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant24</key>
-      <value></value>
+      <key>style10</key>
+      <value>0</value>
     </param>
     <param>
-      <key>bw24</key>
-      <value>0</value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>center_freq25</key>
-      <value>0</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>gain25</key>
-      <value>0</value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>ant25</key>
+      <key>label2</key>
       <value></value>
     </param>
     <param>
-      <key>bw25</key>
+      <key>marker2</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq26</key>
+      <key>style2</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain26</key>
-      <value>0</value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>ant26</key>
-      <value></value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>bw26</key>
-      <value>0</value>
+      <key>color3</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>center_freq27</key>
-      <value>0</value>
+      <key>label3</key>
+      <value></value>
     </param>
     <param>
-      <key>gain27</key>
+      <key>marker3</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant27</key>
-      <value></value>
+      <key>style3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>bw27</key>
-      <value>0</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>center_freq28</key>
-      <value>0</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>gain28</key>
-      <value>0</value>
+      <key>color4</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>ant28</key>
+      <key>label4</key>
       <value></value>
     </param>
     <param>
-      <key>bw28</key>
+      <key>marker4</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq29</key>
+      <key>style4</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain29</key>
-      <value>0</value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>ant29</key>
+      <key>alpha5</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color5</key>
+      <value>"red"</value>
+    </param>
+    <param>
+      <key>label5</key>
       <value></value>
     </param>
     <param>
-      <key>bw29</key>
+      <key>marker5</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq30</key>
+      <key>style5</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain30</key>
-      <value>0</value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>ant30</key>
+      <key>alpha6</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color6</key>
+      <value>"red"</value>
+    </param>
+    <param>
+      <key>label6</key>
       <value></value>
     </param>
     <param>
-      <key>bw30</key>
+      <key>marker6</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq31</key>
+      <key>style6</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain31</key>
-      <value>0</value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>ant31</key>
+      <key>alpha7</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color7</key>
+      <value>"red"</value>
+    </param>
+    <param>
+      <key>label7</key>
       <value></value>
     </param>
     <param>
-      <key>bw31</key>
+      <key>marker7</key>
       <value>0</value>
     </param>
     <param>
-      <key>len_tag_name</key>
-      <value></value>
+      <key>style7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>width7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(576, 131)</value>
+      <key>color8</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>label8</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_const_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_const_sink_x_0</value>
+      <key>marker8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>False</value>
+      <key>style8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>width8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>name</key>
-      <value>""</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>size</key>
-      <value>1024</value>
+      <key>color9</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>autoscale</key>
-      <value>False</value>
+      <key>label9</key>
+      <value></value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-2</value>
+      <key>marker9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>2</value>
+      <key>style9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>xmin</key>
-      <value>-2</value>
+      <key>width9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>xmax</key>
-      <value>2</value>
+      <key>name</key>
+      <value>""</value>
     </param>
     <param>
       <key>nconnections</key>
       <value>1</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>size</key>
+      <value>1024</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value></value>
+      <key>tr_chan</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
       <key>tr_mode</key>
@@ -1297,210 +1333,253 @@
       <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>tr_tag</key>
+      <value>""</value>
     </param>
     <param>
-      <key>tr_chan</key>
-      <value>0</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>""</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>label1</key>
-      <value></value>
+      <key>xmax</key>
+      <value>2</value>
     </param>
     <param>
-      <key>width1</key>
-      <value>1</value>
+      <key>xmin</key>
+      <value>-2</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>ymax</key>
+      <value>2</value>
     </param>
     <param>
-      <key>style1</key>
-      <value>0</value>
+      <key>ymin</key>
+      <value>-2</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_freq_sink_x</key>
     <param>
-      <key>marker1</key>
-      <value>0</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alpha1</key>
+      <key>average</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label2</key>
+      <key>bw</key>
+      <value>samp_rate</value>
+    </param>
+    <param>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>fc</key>
+      <value>tun_freq+rx_freq_off</value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>style2</key>
-      <value>0</value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
     <param>
-      <key>marker2</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>label3</key>
-      <value></value>
+      <key>fftsize</key>
+      <value>1024</value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>_coordinate</key>
+      <value>(610, 254)</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"red"</value>
+      <key>gui_hint</key>
+      <value></value>
     </param>
     <param>
-      <key>style3</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>marker3</key>
-      <value>0</value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>id</key>
+      <value>qtgui_freq_sink_x_0</value>
     </param>
     <param>
-      <key>label4</key>
-      <value></value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"red"</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>style4</key>
-      <value>0</value>
+      <key>label1</key>
+      <value>Received Spectrum</value>
     </param>
     <param>
-      <key>marker4</key>
-      <value>0</value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha4</key>
+      <key>alpha10</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label5</key>
+      <key>color10</key>
+      <value>"dark blue"</value>
+    </param>
+    <param>
+      <key>label10</key>
       <value></value>
     </param>
     <param>
-      <key>width5</key>
+      <key>width10</key>
       <value>1</value>
     </param>
     <param>
-      <key>color5</key>
+      <key>alpha2</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color2</key>
       <value>"red"</value>
     </param>
     <param>
-      <key>style5</key>
-      <value>0</value>
+      <key>label2</key>
+      <value></value>
     </param>
     <param>
-      <key>marker5</key>
-      <value>0</value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha5</key>
+      <key>alpha3</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label6</key>
+      <key>color3</key>
+      <value>"green"</value>
+    </param>
+    <param>
+      <key>label3</key>
       <value></value>
     </param>
     <param>
-      <key>width6</key>
+      <key>width3</key>
       <value>1</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"red"</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>style6</key>
-      <value>0</value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
-      <key>marker6</key>
-      <value>0</value>
+      <key>label4</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha6</key>
+      <key>width4</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha5</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label7</key>
+      <key>color5</key>
+      <value>"cyan"</value>
+    </param>
+    <param>
+      <key>label5</key>
       <value></value>
     </param>
     <param>
-      <key>width7</key>
+      <key>width5</key>
       <value>1</value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"red"</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>style7</key>
-      <value>0</value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
     <param>
-      <key>marker7</key>
-      <value>0</value>
+      <key>label6</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
       <key>alpha7</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label8</key>
+      <key>color7</key>
+      <value>"yellow"</value>
+    </param>
+    <param>
+      <key>label7</key>
       <value></value>
     </param>
     <param>
-      <key>width8</key>
+      <key>width7</key>
       <value>1</value>
     </param>
     <param>
+      <key>alpha8</key>
+      <value>1.0</value>
+    </param>
+    <param>
       <key>color8</key>
-      <value>"red"</value>
+      <value>"dark red"</value>
     </param>
     <param>
-      <key>style8</key>
-      <value>0</value>
+      <key>label8</key>
+      <value></value>
     </param>
     <param>
-      <key>marker8</key>
-      <value>0</value>
+      <key>width8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha8</key>
+      <key>alpha9</key>
       <value>1.0</value>
     </param>
     <param>
+      <key>color9</key>
+      <value>"dark green"</value>
+    </param>
+    <param>
       <key>label9</key>
       <value></value>
     </param>
@@ -1509,1183 +1588,1565 @@
       <value>1</value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>style9</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>marker9</key>
+      <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>name</key>
+      <value>Received Spectrum</value>
     </param>
     <param>
-      <key>label10</key>
-      <value></value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width10</key>
-      <value>1</value>
+      <key>showports</key>
+      <value>True</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"red"</value>
+      <key>freqhalf</key>
+      <value>True</value>
     </param>
     <param>
-      <key>style10</key>
+      <key>tr_chan</key>
       <value>0</value>
     </param>
     <param>
-      <key>marker10</key>
-      <value>0</value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>tr_tag</key>
+      <value>""</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1, 367)</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>180</value>
+      <key>wintype</key>
+      <value>firdes.WIN_BLACKMAN_hARRIS</value>
     </param>
-  </block>
-  <block>
-    <key>uhd_usrp_source</key>
     <param>
-      <key>id</key>
-      <value>uhd_usrp_source_0</value>
+      <key>ymax</key>
+      <value>10</value>
     </param>
     <param>
-      <key>_enabled</key>
+      <key>ymin</key>
+      <value>-140</value>
+    </param>
+  </block>
+  <block>
+    <key>qtgui_time_sink_x</key>
+    <param>
+      <key>autoscale</key>
       <value>True</value>
     </param>
     <param>
-      <key>type</key>
-      <value>fc32</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>otw</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>stream_args</key>
+      <key>ctrlpanel</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>stream_chans</key>
-      <value>[]</value>
+      <key>entags</key>
+      <value>True</value>
     </param>
     <param>
-      <key>dev_addr</key>
-      <value>address1</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>dev_args</key>
-      <value>""</value>
+      <key>_coordinate</key>
+      <value>(294, 265)</value>
     </param>
     <param>
-      <key>sync</key>
+      <key>gui_hint</key>
       <value></value>
     </param>
     <param>
-      <key>clock_rate</key>
-      <value>0.0</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>num_mboards</key>
-      <value>1</value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>clock_source0</key>
-      <value></value>
+      <key>id</key>
+      <value>qtgui_time_sink_x_0</value>
     </param>
     <param>
-      <key>time_source0</key>
-      <value></value>
+      <key>legend</key>
+      <value>True</value>
     </param>
     <param>
-      <key>sd_spec0</key>
-      <value>A:0</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>clock_source1</key>
-      <value></value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>time_source1</key>
+      <key>label1</key>
       <value></value>
     </param>
     <param>
-      <key>sd_spec1</key>
-      <value></value>
+      <key>marker1</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>clock_source2</key>
-      <value></value>
+      <key>style1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>time_source2</key>
-      <value></value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>sd_spec2</key>
-      <value></value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>clock_source3</key>
-      <value></value>
+      <key>color10</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>time_source3</key>
+      <key>label10</key>
       <value></value>
     </param>
     <param>
-      <key>sd_spec3</key>
-      <value></value>
+      <key>marker10</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>clock_source4</key>
-      <value></value>
+      <key>style10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>time_source4</key>
-      <value></value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>sd_spec4</key>
-      <value></value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>clock_source5</key>
-      <value></value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>time_source5</key>
+      <key>label2</key>
       <value></value>
     </param>
     <param>
-      <key>sd_spec5</key>
-      <value></value>
+      <key>marker2</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>clock_source6</key>
-      <value></value>
+      <key>style2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>time_source6</key>
-      <value></value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>sd_spec6</key>
-      <value></value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>clock_source7</key>
-      <value></value>
+      <key>color3</key>
+      <value>"green"</value>
     </param>
     <param>
-      <key>time_source7</key>
+      <key>label3</key>
       <value></value>
     </param>
     <param>
-      <key>sd_spec7</key>
-      <value></value>
+      <key>marker3</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>nchan</key>
+      <key>style3</key>
       <value>1</value>
     </param>
     <param>
-      <key>samp_rate</key>
-      <value>samp_rate</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>center_freq0</key>
-      <value>tun_freq+rx_freq_off</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>gain0</key>
-      <value>tun_rx_gain</value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
-      <key>ant0</key>
+      <key>label4</key>
       <value></value>
     </param>
     <param>
-      <key>bw0</key>
-      <value>0</value>
+      <key>marker4</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>center_freq1</key>
-      <value>0</value>
+      <key>style4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>gain1</key>
-      <value>0</value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>ant1</key>
-      <value></value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>bw1</key>
-      <value>0</value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
     <param>
-      <key>center_freq2</key>
-      <value>0</value>
+      <key>label5</key>
+      <value></value>
     </param>
     <param>
-      <key>gain2</key>
-      <value>0</value>
+      <key>marker5</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>ant2</key>
-      <value></value>
+      <key>style5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>bw2</key>
-      <value>0</value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>center_freq3</key>
-      <value>0</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>gain3</key>
-      <value>0</value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
     <param>
-      <key>ant3</key>
+      <key>label6</key>
       <value></value>
     </param>
     <param>
-      <key>bw3</key>
-      <value>0</value>
+      <key>marker6</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>center_freq4</key>
-      <value>0</value>
+      <key>style6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>gain4</key>
-      <value>0</value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>ant4</key>
-      <value></value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>bw4</key>
-      <value>0</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
-      <key>center_freq5</key>
-      <value>0</value>
+      <key>label7</key>
+      <value></value>
     </param>
     <param>
-      <key>gain5</key>
-      <value>0</value>
+      <key>marker7</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>ant5</key>
-      <value></value>
+      <key>style7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>bw5</key>
-      <value>0</value>
+      <key>width7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>center_freq6</key>
-      <value>0</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>gain6</key>
-      <value>0</value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
     <param>
-      <key>ant6</key>
+      <key>label8</key>
       <value></value>
     </param>
     <param>
-      <key>bw6</key>
-      <value>0</value>
+      <key>marker8</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>center_freq7</key>
-      <value>0</value>
+      <key>style8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>gain7</key>
-      <value>0</value>
+      <key>width8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>ant7</key>
-      <value></value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>bw7</key>
-      <value>0</value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
     <param>
-      <key>center_freq8</key>
-      <value>0</value>
+      <key>label9</key>
+      <value></value>
     </param>
     <param>
-      <key>gain8</key>
-      <value>0</value>
+      <key>marker9</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>ant8</key>
-      <value></value>
+      <key>style9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>bw8</key>
-      <value>0</value>
+      <key>width9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>center_freq9</key>
-      <value>0</value>
+      <key>name</key>
+      <value>Rx Time Signal</value>
     </param>
     <param>
-      <key>gain9</key>
-      <value>0</value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>ant9</key>
-      <value></value>
+      <key>size</key>
+      <value>1024</value>
     </param>
     <param>
-      <key>bw9</key>
-      <value>0</value>
+      <key>srate</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>center_freq10</key>
+      <key>tr_chan</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain10</key>
+      <key>tr_delay</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant10</key>
-      <value></value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>bw10</key>
-      <value>0</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
     </param>
     <param>
-      <key>center_freq11</key>
-      <value>0</value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
     <param>
-      <key>gain11</key>
-      <value>0</value>
+      <key>tr_tag</key>
+      <value>""</value>
     </param>
     <param>
-      <key>ant11</key>
-      <value></value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>bw11</key>
-      <value>0</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>center_freq12</key>
-      <value>0</value>
+      <key>ylabel</key>
+      <value>Amplitude</value>
     </param>
     <param>
-      <key>gain12</key>
-      <value>0</value>
+      <key>yunit</key>
+      <value>""</value>
     </param>
     <param>
-      <key>ant12</key>
-      <value></value>
+      <key>ymax</key>
+      <value>1</value>
     </param>
     <param>
-      <key>bw12</key>
-      <value>0</value>
+      <key>ymin</key>
+      <value>-1</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_time_sink_x</key>
     <param>
-      <key>center_freq13</key>
-      <value>0</value>
+      <key>autoscale</key>
+      <value>True</value>
     </param>
     <param>
-      <key>gain13</key>
-      <value>0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>ant13</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>bw13</key>
-      <value>0</value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
     <param>
-      <key>center_freq14</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>gain14</key>
-      <value>0</value>
+      <key>entags</key>
+      <value>True</value>
     </param>
     <param>
-      <key>ant14</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>bw14</key>
-      <value>0</value>
+      <key>_coordinate</key>
+      <value>(923, 405)</value>
     </param>
     <param>
-      <key>center_freq15</key>
-      <value>0</value>
+      <key>gui_hint</key>
+      <value></value>
     </param>
     <param>
-      <key>gain15</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant15</key>
-      <value></value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>bw15</key>
-      <value>0</value>
+      <key>id</key>
+      <value>qtgui_time_sink_x_1</value>
     </param>
     <param>
-      <key>center_freq16</key>
-      <value>0</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>gain16</key>
-      <value>0</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>ant16</key>
+      <key>color1</key>
+      <value>"blue"</value>
+    </param>
+    <param>
+      <key>label1</key>
       <value></value>
     </param>
     <param>
-      <key>bw16</key>
+      <key>marker1</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style1</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width1</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha10</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color10</key>
+      <value>"blue"</value>
+    </param>
+    <param>
+      <key>label10</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker10</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style10</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width10</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha2</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color2</key>
+      <value>"red"</value>
+    </param>
+    <param>
+      <key>label2</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker2</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style2</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width2</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha3</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color3</key>
+      <value>"green"</value>
+    </param>
+    <param>
+      <key>label3</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker3</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style3</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width3</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha4</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color4</key>
+      <value>"black"</value>
+    </param>
+    <param>
+      <key>label4</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker4</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style4</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width4</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha5</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color5</key>
+      <value>"cyan"</value>
+    </param>
+    <param>
+      <key>label5</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker5</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style5</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width5</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha6</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color6</key>
+      <value>"magenta"</value>
+    </param>
+    <param>
+      <key>label6</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker6</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style6</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width6</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha7</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color7</key>
+      <value>"yellow"</value>
+    </param>
+    <param>
+      <key>label7</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker7</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style7</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width7</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha8</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color8</key>
+      <value>"dark red"</value>
+    </param>
+    <param>
+      <key>label8</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker8</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style8</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width8</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha9</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color9</key>
+      <value>"dark green"</value>
+    </param>
+    <param>
+      <key>label9</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker9</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style9</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width9</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>name</key>
+      <value>Received Data</value>
+    </param>
+    <param>
+      <key>nconnections</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>size</key>
+      <value>1024</value>
+    </param>
+    <param>
+      <key>srate</key>
+      <value>samp_rate</value>
+    </param>
+    <param>
+      <key>tr_chan</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>tr_delay</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>tr_level</key>
+      <value>0.0</value>
+    </param>
+    <param>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
+    </param>
+    <param>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
+    </param>
+    <param>
+      <key>tr_tag</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>float</value>
+    </param>
+    <param>
+      <key>update_time</key>
+      <value>0.10</value>
+    </param>
+    <param>
+      <key>ylabel</key>
+      <value>Amplitude</value>
+    </param>
+    <param>
+      <key>yunit</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>ymax</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>ymin</key>
+      <value>-1</value>
+    </param>
+  </block>
+  <block>
+    <key>parameter</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(1102, 0)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>rx_gain</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value>Default RX Gain</value>
+    </param>
+    <param>
+      <key>short_id</key>
+      <value></value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>eng_float</value>
+    </param>
+    <param>
+      <key>value</key>
       <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>parameter</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
     <param>
-      <key>center_freq17</key>
-      <value>0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>gain17</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>ant17</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(508, 0)</value>
     </param>
     <param>
-      <key>bw17</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq18</key>
-      <value>0</value>
+      <key>id</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>gain18</key>
-      <value>0</value>
+      <key>label</key>
+      <value>Sample Rate</value>
     </param>
     <param>
-      <key>ant18</key>
-      <value></value>
+      <key>short_id</key>
+      <value>s</value>
     </param>
     <param>
-      <key>bw18</key>
-      <value>0</value>
+      <key>type</key>
+      <value>eng_float</value>
     </param>
     <param>
-      <key>center_freq19</key>
-      <value>0</value>
+      <key>value</key>
+      <value>1e6</value>
     </param>
+  </block>
+  <block>
+    <key>parameter</key>
     <param>
-      <key>gain19</key>
-      <value>0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>ant19</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>bw19</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>center_freq20</key>
-      <value>0</value>
+      <key>_coordinate</key>
+      <value>(968, 0)</value>
     </param>
     <param>
-      <key>gain20</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant20</key>
+      <key>id</key>
+      <value>tx_gain</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value>Default TX Gain</value>
+    </param>
+    <param>
+      <key>short_id</key>
       <value></value>
     </param>
     <param>
-      <key>bw20</key>
-      <value>0</value>
+      <key>type</key>
+      <value>eng_float</value>
     </param>
     <param>
-      <key>center_freq21</key>
+      <key>value</key>
       <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>uhd_usrp_sink</key>
     <param>
-      <key>gain21</key>
-      <value>0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>ant21</key>
+      <key>ant0</key>
       <value></value>
     </param>
     <param>
-      <key>bw21</key>
+      <key>bw0</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq22</key>
-      <value>0</value>
+      <key>center_freq0</key>
+      <value>tun_freq</value>
     </param>
     <param>
-      <key>gain22</key>
-      <value>0</value>
+      <key>norm_gain0</key>
+      <value>False</value>
     </param>
     <param>
-      <key>ant22</key>
+      <key>gain0</key>
+      <value>tun_rx_gain</value>
+    </param>
+    <param>
+      <key>ant10</key>
       <value></value>
     </param>
     <param>
-      <key>bw22</key>
+      <key>bw10</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq23</key>
+      <key>center_freq10</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain23</key>
+      <key>norm_gain10</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain10</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant23</key>
+      <key>ant11</key>
       <value></value>
     </param>
     <param>
-      <key>bw23</key>
+      <key>bw11</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq24</key>
+      <key>center_freq11</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain24</key>
+      <key>norm_gain11</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain11</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant24</key>
+      <key>ant12</key>
       <value></value>
     </param>
     <param>
-      <key>bw24</key>
+      <key>bw12</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq25</key>
+      <key>center_freq12</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain25</key>
+      <key>norm_gain12</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain12</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant25</key>
+      <key>ant13</key>
       <value></value>
     </param>
     <param>
-      <key>bw25</key>
+      <key>bw13</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq26</key>
+      <key>center_freq13</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain26</key>
+      <key>norm_gain13</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain13</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant26</key>
+      <key>ant14</key>
       <value></value>
     </param>
     <param>
-      <key>bw26</key>
+      <key>bw14</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq27</key>
+      <key>center_freq14</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain27</key>
+      <key>norm_gain14</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain14</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant27</key>
+      <key>ant15</key>
       <value></value>
     </param>
     <param>
-      <key>bw27</key>
+      <key>bw15</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq28</key>
+      <key>center_freq15</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain28</key>
+      <key>norm_gain15</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain15</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant28</key>
+      <key>ant16</key>
       <value></value>
     </param>
     <param>
-      <key>bw28</key>
+      <key>bw16</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq29</key>
+      <key>center_freq16</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain29</key>
+      <key>norm_gain16</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain16</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant29</key>
+      <key>ant17</key>
       <value></value>
     </param>
     <param>
-      <key>bw29</key>
+      <key>bw17</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq30</key>
+      <key>center_freq17</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain30</key>
-      <value>0</value>
+      <key>norm_gain17</key>
+      <value>False</value>
     </param>
     <param>
-      <key>ant30</key>
-      <value></value>
+      <key>gain17</key>
+      <value>0</value>
     </param>
     <param>
-      <key>bw30</key>
-      <value>0</value>
+      <key>ant18</key>
+      <value></value>
     </param>
     <param>
-      <key>center_freq31</key>
+      <key>bw18</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain31</key>
+      <key>center_freq18</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant31</key>
-      <value></value>
+      <key>norm_gain18</key>
+      <value>False</value>
     </param>
     <param>
-      <key>bw31</key>
+      <key>gain18</key>
       <value>0</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>ant19</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>bw19</key>
+      <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>center_freq19</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>norm_gain19</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain19</key>
       <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(-1, 242)</value>
+      <key>ant1</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>bw1</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_dxpsk_mod</key>
     <param>
-      <key>id</key>
-      <value>digital_dxpsk_mod_0</value>
+      <key>center_freq1</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>norm_gain1</key>
+      <value>False</value>
     </param>
     <param>
-      <key>type</key>
-      <value>dqpsk</value>
+      <key>gain1</key>
+      <value>0</value>
     </param>
     <param>
-      <key>samples_per_symbol</key>
-      <value>samps_per_sym</value>
+      <key>ant20</key>
+      <value></value>
     </param>
     <param>
-      <key>excess_bw</key>
-      <value>0.35</value>
+      <key>bw20</key>
+      <value>0</value>
     </param>
     <param>
-      <key>mod_code</key>
-      <value>"gray"</value>
+      <key>center_freq20</key>
+      <value>0</value>
     </param>
     <param>
-      <key>verbose</key>
+      <key>norm_gain20</key>
       <value>False</value>
     </param>
     <param>
-      <key>log</key>
-      <value>False</value>
+      <key>gain20</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>ant21</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>bw21</key>
+      <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>center_freq21</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>norm_gain21</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain21</key>
       <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(204, 138)</value>
+      <key>ant22</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>bw22</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_vector_source_x</key>
     <param>
-      <key>id</key>
-      <value>blocks_vector_source_x_0</value>
+      <key>center_freq22</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>norm_gain22</key>
+      <value>False</value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>gain22</key>
+      <value>0</value>
     </param>
     <param>
-      <key>vector</key>
-      <value>range(256)</value>
+      <key>ant23</key>
+      <value></value>
     </param>
     <param>
-      <key>tags</key>
-      <value>[]</value>
+      <key>bw23</key>
+      <value>0</value>
     </param>
     <param>
-      <key>repeat</key>
-      <value>True</value>
+      <key>center_freq23</key>
+      <value>0</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>norm_gain23</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>gain23</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>ant24</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>bw24</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>center_freq24</key>
       <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(6, 142)</value>
+      <key>norm_gain24</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>gain24</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_time_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_time_sink_x_0</value>
+      <key>ant25</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>bw25</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>center_freq25</key>
+      <value>0</value>
     </param>
     <param>
-      <key>name</key>
-      <value>Rx Time Signal</value>
+      <key>norm_gain25</key>
+      <value>False</value>
     </param>
     <param>
-      <key>size</key>
-      <value>1024</value>
+      <key>gain25</key>
+      <value>0</value>
     </param>
     <param>
-      <key>srate</key>
-      <value>samp_rate</value>
+      <key>ant26</key>
+      <value></value>
     </param>
     <param>
-      <key>autoscale</key>
-      <value>True</value>
+      <key>bw26</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-1</value>
+      <key>center_freq26</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>1</value>
+      <key>norm_gain26</key>
+      <value>False</value>
     </param>
     <param>
-      <key>nconnections</key>
-      <value>1</value>
+      <key>gain26</key>
+      <value>0</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>ant27</key>
+      <value></value>
     </param>
     <param>
-      <key>entags</key>
-      <value>True</value>
+      <key>bw27</key>
+      <value>0</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value></value>
+      <key>center_freq27</key>
+      <value>0</value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
+      <key>norm_gain27</key>
+      <value>False</value>
     </param>
     <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
+      <key>gain27</key>
+      <value>0</value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>ant28</key>
+      <value></value>
     </param>
     <param>
-      <key>tr_delay</key>
+      <key>bw28</key>
       <value>0</value>
     </param>
     <param>
-      <key>tr_chan</key>
+      <key>center_freq28</key>
       <value>0</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>""</value>
+      <key>norm_gain28</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label1</key>
-      <value></value>
+      <key>gain28</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width1</key>
-      <value>1</value>
+      <key>ant29</key>
+      <value></value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>bw29</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style1</key>
-      <value>1</value>
+      <key>center_freq29</key>
+      <value>0</value>
     </param>
     <param>
-      <key>marker1</key>
-      <value>-1</value>
+      <key>norm_gain29</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>gain29</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label2</key>
+      <key>ant2</key>
       <value></value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>bw2</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style2</key>
-      <value>1</value>
+      <key>center_freq2</key>
+      <value>0</value>
     </param>
     <param>
-      <key>marker2</key>
-      <value>-1</value>
+      <key>norm_gain2</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>gain2</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label3</key>
+      <key>ant30</key>
       <value></value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>bw30</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style3</key>
-      <value>1</value>
+      <key>center_freq30</key>
+      <value>0</value>
     </param>
     <param>
-      <key>marker3</key>
-      <value>-1</value>
+      <key>norm_gain30</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>gain30</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label4</key>
+      <key>ant31</key>
       <value></value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>bw31</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>center_freq31</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style4</key>
-      <value>1</value>
+      <key>norm_gain31</key>
+      <value>False</value>
     </param>
     <param>
-      <key>marker4</key>
-      <value>-1</value>
+      <key>gain31</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>ant3</key>
+      <value></value>
     </param>
     <param>
-      <key>label5</key>
-      <value></value>
+      <key>bw3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>center_freq3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>norm_gain3</key>
+      <value>False</value>
     </param>
     <param>
-      <key>style5</key>
-      <value>1</value>
+      <key>gain3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>marker5</key>
-      <value>-1</value>
+      <key>ant4</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>bw4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label6</key>
-      <value></value>
+      <key>center_freq4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>norm_gain4</key>
+      <value>False</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
+      <key>gain4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style6</key>
-      <value>1</value>
+      <key>ant5</key>
+      <value></value>
     </param>
     <param>
-      <key>marker6</key>
-      <value>-1</value>
+      <key>bw5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>center_freq5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label7</key>
-      <value></value>
+      <key>norm_gain5</key>
+      <value>False</value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>gain5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>ant6</key>
+      <value></value>
     </param>
     <param>
-      <key>style7</key>
-      <value>1</value>
+      <key>bw6</key>
+      <value>0</value>
     </param>
     <param>
-      <key>marker7</key>
-      <value>-1</value>
+      <key>center_freq6</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>norm_gain6</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label8</key>
-      <value></value>
+      <key>gain6</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>ant7</key>
+      <value></value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>bw7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style8</key>
-      <value>1</value>
+      <key>center_freq7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>marker8</key>
-      <value>-1</value>
+      <key>norm_gain7</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>gain7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label9</key>
+      <key>ant8</key>
       <value></value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>bw8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style9</key>
-      <value>1</value>
+      <key>center_freq8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>marker9</key>
-      <value>-1</value>
+      <key>norm_gain8</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>gain8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label10</key>
+      <key>ant9</key>
       <value></value>
     </param>
     <param>
-      <key>width10</key>
-      <value>1</value>
+      <key>bw9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"blue"</value>
+      <key>center_freq9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style10</key>
-      <value>1</value>
+      <key>norm_gain9</key>
+      <value>False</value>
     </param>
     <param>
-      <key>marker10</key>
-      <value>-1</value>
+      <key>gain9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>clock_rate</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
@@ -2693,1042 +3154,1038 @@
       <value></value>
     </param>
     <param>
+      <key>dev_addr</key>
+      <value>address0</value>
+    </param>
+    <param>
+      <key>dev_args</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(294, 265)</value>
+      <value>(576, 131)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
     <param>
       <key>id</key>
-      <value>tun_freq</value>
+      <value>uhd_usrp_sink_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>type</key>
+      <value>fc32</value>
     </param>
     <param>
-      <key>label</key>
-      <value>UHD Freq (Hz)</value>
+      <key>len_tag_name</key>
+      <value></value>
     </param>
     <param>
-      <key>value</key>
-      <value>1.982e9</value>
+      <key>clock_source0</key>
+      <value></value>
     </param>
     <param>
-      <key>start</key>
-      <value>1.9e9</value>
+      <key>sd_spec0</key>
+      <value>B:0</value>
     </param>
     <param>
-      <key>stop</key>
-      <value>2.5e9</value>
+      <key>time_source0</key>
+      <value></value>
     </param>
     <param>
-      <key>step</key>
-      <value>1</value>
+      <key>clock_source1</key>
+      <value></value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>sd_spec1</key>
+      <value></value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>time_source1</key>
+      <value></value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>clock_source2</key>
+      <value></value>
     </param>
     <param>
-      <key>gui_hint</key>
+      <key>sd_spec2</key>
       <value></value>
     </param>
     <param>
-      <key>alias</key>
+      <key>time_source2</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(5, 545)</value>
+      <key>clock_source3</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>sd_spec3</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>tun_rx_gain</value>
+      <key>time_source3</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>clock_source4</key>
+      <value></value>
     </param>
     <param>
-      <key>label</key>
-      <value>UHD Rx Gain</value>
+      <key>sd_spec4</key>
+      <value></value>
     </param>
     <param>
-      <key>value</key>
-      <value>0</value>
+      <key>time_source4</key>
+      <value></value>
     </param>
     <param>
-      <key>start</key>
-      <value>0</value>
+      <key>clock_source5</key>
+      <value></value>
     </param>
     <param>
-      <key>stop</key>
-      <value>30</value>
+      <key>sd_spec5</key>
+      <value></value>
     </param>
     <param>
-      <key>step</key>
-      <value>1</value>
+      <key>time_source5</key>
+      <value></value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>clock_source6</key>
+      <value></value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>sd_spec6</key>
+      <value></value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>time_source6</key>
+      <value></value>
     </param>
     <param>
-      <key>gui_hint</key>
+      <key>clock_source7</key>
       <value></value>
     </param>
     <param>
-      <key>alias</key>
+      <key>sd_spec7</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(391, 546)</value>
+      <key>time_source7</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>nchan</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>tun_tx_gain</value>
+      <key>num_mboards</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>samp_rate</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>label</key>
-      <value>UHD Tx Gain</value>
+      <key>stream_args</key>
+      <value></value>
     </param>
     <param>
-      <key>value</key>
-      <value>0</value>
+      <key>stream_chans</key>
+      <value>[]</value>
     </param>
     <param>
-      <key>start</key>
-      <value>0</value>
+      <key>sync</key>
+      <value></value>
     </param>
     <param>
-      <key>stop</key>
-      <value>30</value>
+      <key>otw</key>
+      <value></value>
     </param>
+  </block>
+  <block>
+    <key>uhd_usrp_source</key>
     <param>
-      <key>step</key>
-      <value>1</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>ant0</key>
+      <value></value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>bw0</key>
+      <value>0</value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>center_freq0</key>
+      <value>tun_freq+rx_freq_off</value>
+    </param>
+    <param>
+      <key>norm_gain0</key>
+      <value>False</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value></value>
+      <key>gain0</key>
+      <value>tun_rx_gain</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>ant10</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(277, 546)</value>
+      <key>bw10</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>center_freq10</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>rx_freq_off</value>
+      <key>norm_gain10</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>gain10</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Rx Freq Offset (Hz)</value>
+      <key>ant11</key>
+      <value></value>
     </param>
     <param>
-      <key>value</key>
+      <key>bw11</key>
       <value>0</value>
     </param>
     <param>
-      <key>start</key>
-      <value>-50e3</value>
+      <key>center_freq11</key>
+      <value>0</value>
     </param>
     <param>
-      <key>stop</key>
-      <value>50e3</value>
+      <key>norm_gain11</key>
+      <value>False</value>
     </param>
     <param>
-      <key>step</key>
-      <value>1</value>
+      <key>gain11</key>
+      <value>0</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>ant12</key>
+      <value></value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>bw12</key>
+      <value>0</value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>center_freq12</key>
+      <value>0</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value></value>
+      <key>norm_gain12</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>gain12</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(130, 547)</value>
+      <key>ant13</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>bw13</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_dxpsk_demod</key>
     <param>
-      <key>id</key>
-      <value>digital_dxpsk_demod_0</value>
+      <key>center_freq13</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>norm_gain13</key>
+      <value>False</value>
     </param>
     <param>
-      <key>type</key>
-      <value>dqpsk</value>
+      <key>gain13</key>
+      <value>0</value>
     </param>
     <param>
-      <key>samples_per_symbol</key>
-      <value>samps_per_sym</value>
+      <key>ant14</key>
+      <value></value>
     </param>
     <param>
-      <key>excess_bw</key>
-      <value>0.35</value>
+      <key>bw14</key>
+      <value>0</value>
     </param>
     <param>
-      <key>freq_bw</key>
-      <value>6.28/100.0</value>
+      <key>center_freq14</key>
+      <value>0</value>
     </param>
     <param>
-      <key>phase_bw</key>
-      <value>6.28/100.0</value>
+      <key>norm_gain14</key>
+      <value>False</value>
     </param>
     <param>
-      <key>timing_bw</key>
-      <value>6.28/100.0</value>
+      <key>gain14</key>
+      <value>0</value>
     </param>
     <param>
-      <key>mod_code</key>
-      <value>"gray"</value>
+      <key>ant15</key>
+      <value></value>
     </param>
     <param>
-      <key>verbose</key>
-      <value>False</value>
+      <key>bw15</key>
+      <value>0</value>
     </param>
     <param>
-      <key>log</key>
-      <value>False</value>
+      <key>center_freq15</key>
+      <value>0</value>
     </param>
     <param>
-      <key>sync_out</key>
-      <value>True</value>
+      <key>norm_gain15</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>gain15</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>ant16</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>bw16</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>center_freq16</key>
       <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(294, 375)</value>
+      <key>norm_gain16</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>gain16</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_unpacked_to_packed_xx</key>
-    <param>
-      <key>id</key>
-      <value>blocks_unpacked_to_packed_xx_0</value>
-    </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>ant17</key>
+      <value></value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>bw17</key>
+      <value>0</value>
     </param>
     <param>
-      <key>bits_per_chunk</key>
-      <value>1</value>
+      <key>center_freq17</key>
+      <value>0</value>
     </param>
     <param>
-      <key>endianness</key>
-      <value>gr.GR_LSB_FIRST</value>
+      <key>norm_gain17</key>
+      <value>False</value>
     </param>
     <param>
-      <key>num_ports</key>
-      <value>1</value>
+      <key>gain17</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>ant18</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>bw18</key>
+      <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>center_freq18</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>norm_gain18</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain18</key>
       <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(542, 420)</value>
+      <key>ant19</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>bw19</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_uchar_to_float</key>
     <param>
-      <key>id</key>
-      <value>blocks_uchar_to_float_0</value>
+      <key>center_freq19</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>norm_gain19</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>gain19</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>ant1</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>bw1</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>center_freq1</key>
       <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(747, 431)</value>
+      <key>norm_gain1</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>gain1</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_time_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_time_sink_x_1</value>
+      <key>ant20</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>bw20</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>float</value>
+      <key>center_freq20</key>
+      <value>0</value>
     </param>
     <param>
-      <key>name</key>
-      <value>Received Data</value>
+      <key>norm_gain20</key>
+      <value>False</value>
     </param>
     <param>
-      <key>size</key>
-      <value>1024</value>
+      <key>gain20</key>
+      <value>0</value>
     </param>
     <param>
-      <key>srate</key>
-      <value>samp_rate</value>
+      <key>ant21</key>
+      <value></value>
     </param>
     <param>
-      <key>autoscale</key>
-      <value>True</value>
+      <key>bw21</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-1</value>
+      <key>center_freq21</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>1</value>
+      <key>norm_gain21</key>
+      <value>False</value>
     </param>
     <param>
-      <key>nconnections</key>
-      <value>1</value>
+      <key>gain21</key>
+      <value>0</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>ant22</key>
+      <value></value>
     </param>
     <param>
-      <key>entags</key>
-      <value>True</value>
+      <key>bw22</key>
+      <value>0</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value></value>
+      <key>center_freq22</key>
+      <value>0</value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
+      <key>norm_gain22</key>
+      <value>False</value>
     </param>
-    <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
+    <param>
+      <key>gain22</key>
+      <value>0</value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>ant23</key>
+      <value></value>
     </param>
     <param>
-      <key>tr_delay</key>
+      <key>bw23</key>
       <value>0</value>
     </param>
     <param>
-      <key>tr_chan</key>
+      <key>center_freq23</key>
       <value>0</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>""</value>
+      <key>norm_gain23</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label1</key>
-      <value></value>
+      <key>gain23</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width1</key>
-      <value>1</value>
+      <key>ant24</key>
+      <value></value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>bw24</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style1</key>
-      <value>1</value>
+      <key>center_freq24</key>
+      <value>0</value>
     </param>
     <param>
-      <key>marker1</key>
-      <value>-1</value>
+      <key>norm_gain24</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>gain24</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label2</key>
+      <key>ant25</key>
       <value></value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>bw25</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>center_freq25</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style2</key>
-      <value>1</value>
+      <key>norm_gain25</key>
+      <value>False</value>
     </param>
     <param>
-      <key>marker2</key>
-      <value>-1</value>
+      <key>gain25</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>ant26</key>
+      <value></value>
     </param>
     <param>
-      <key>label3</key>
-      <value></value>
+      <key>bw26</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>center_freq26</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>norm_gain26</key>
+      <value>False</value>
     </param>
     <param>
-      <key>style3</key>
-      <value>1</value>
+      <key>gain26</key>
+      <value>0</value>
     </param>
     <param>
-      <key>marker3</key>
-      <value>-1</value>
+      <key>ant27</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>bw27</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label4</key>
-      <value></value>
+      <key>center_freq27</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>norm_gain27</key>
+      <value>False</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>gain27</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style4</key>
-      <value>1</value>
+      <key>ant28</key>
+      <value></value>
     </param>
     <param>
-      <key>marker4</key>
-      <value>-1</value>
+      <key>bw28</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>center_freq28</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label5</key>
-      <value></value>
+      <key>norm_gain28</key>
+      <value>False</value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>gain28</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>ant29</key>
+      <value></value>
     </param>
     <param>
-      <key>style5</key>
-      <value>1</value>
+      <key>bw29</key>
+      <value>0</value>
     </param>
     <param>
-      <key>marker5</key>
-      <value>-1</value>
+      <key>center_freq29</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>norm_gain29</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label6</key>
-      <value></value>
+      <key>gain29</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>ant2</key>
+      <value></value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
+      <key>bw2</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style6</key>
-      <value>1</value>
+      <key>center_freq2</key>
+      <value>0</value>
     </param>
     <param>
-      <key>marker6</key>
-      <value>-1</value>
+      <key>norm_gain2</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>gain2</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label7</key>
+      <key>ant30</key>
       <value></value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>bw30</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>center_freq30</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style7</key>
-      <value>1</value>
+      <key>norm_gain30</key>
+      <value>False</value>
     </param>
     <param>
-      <key>marker7</key>
-      <value>-1</value>
+      <key>gain30</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>ant31</key>
+      <value></value>
     </param>
     <param>
-      <key>label8</key>
-      <value></value>
+      <key>bw31</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>center_freq31</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>norm_gain31</key>
+      <value>False</value>
     </param>
     <param>
-      <key>style8</key>
-      <value>1</value>
+      <key>gain31</key>
+      <value>0</value>
     </param>
     <param>
-      <key>marker8</key>
-      <value>-1</value>
+      <key>ant3</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>bw3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label9</key>
-      <value></value>
+      <key>center_freq3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>norm_gain3</key>
+      <value>False</value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>gain3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style9</key>
-      <value>1</value>
+      <key>ant4</key>
+      <value></value>
     </param>
     <param>
-      <key>marker9</key>
-      <value>-1</value>
+      <key>bw4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>center_freq4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label10</key>
-      <value></value>
+      <key>norm_gain4</key>
+      <value>False</value>
     </param>
     <param>
-      <key>width10</key>
-      <value>1</value>
+      <key>gain4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"blue"</value>
+      <key>ant5</key>
+      <value></value>
     </param>
     <param>
-      <key>style10</key>
-      <value>1</value>
+      <key>bw5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>marker10</key>
-      <value>-1</value>
+      <key>center_freq5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>norm_gain5</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>gain5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>ant6</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(923, 405)</value>
+      <key>bw6</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>center_freq6</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_freq_sink_x</key>
-    <param>
-      <key>id</key>
-      <value>qtgui_freq_sink_x_0</value>
+    <param>
+      <key>norm_gain6</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>gain6</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>ant7</key>
+      <value></value>
     </param>
     <param>
-      <key>name</key>
-      <value>Received Spectrum</value>
+      <key>bw7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>fftsize</key>
-      <value>1024</value>
+      <key>center_freq7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>wintype</key>
-      <value>firdes.WIN_BLACKMAN_hARRIS</value>
+      <key>norm_gain7</key>
+      <value>False</value>
     </param>
     <param>
-      <key>fc</key>
-      <value>tun_freq+rx_freq_off</value>
+      <key>gain7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>bw</key>
-      <value>samp_rate</value>
+      <key>ant8</key>
+      <value></value>
     </param>
     <param>
-      <key>autoscale</key>
-      <value>False</value>
+      <key>bw8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>average</key>
-      <value>1.0</value>
+      <key>center_freq8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-140</value>
+      <key>norm_gain8</key>
+      <value>False</value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>10</value>
+      <key>gain8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>nconnections</key>
-      <value>1</value>
+      <key>ant9</key>
+      <value></value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>bw9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value></value>
+      <key>center_freq9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label1</key>
-      <value>Received Spectrum</value>
+      <key>norm_gain9</key>
+      <value>False</value>
     </param>
     <param>
-      <key>width1</key>
-      <value>1</value>
+      <key>gain9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>clock_rate</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>label2</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>dev_addr</key>
+      <value>address1</value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>dev_args</key>
+      <value>""</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>label3</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(-1, 242)</value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>id</key>
+      <value>uhd_usrp_source_0</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label4</key>
+      <key>clock_source0</key>
       <value></value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>sd_spec0</key>
+      <value>A:0</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>time_source0</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>clock_source1</key>
+      <value></value>
     </param>
     <param>
-      <key>label5</key>
+      <key>sd_spec1</key>
       <value></value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>time_source1</key>
+      <value></value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>clock_source2</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>sd_spec2</key>
+      <value></value>
     </param>
     <param>
-      <key>label6</key>
+      <key>time_source2</key>
       <value></value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>clock_source3</key>
+      <value></value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
+      <key>sd_spec3</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>time_source3</key>
+      <value></value>
     </param>
     <param>
-      <key>label7</key>
+      <key>clock_source4</key>
       <value></value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>sd_spec4</key>
+      <value></value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>time_source4</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>clock_source5</key>
+      <value></value>
     </param>
     <param>
-      <key>label8</key>
+      <key>sd_spec5</key>
       <value></value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>time_source5</key>
+      <value></value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>clock_source6</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>sd_spec6</key>
+      <value></value>
     </param>
     <param>
-      <key>label9</key>
+      <key>time_source6</key>
       <value></value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>clock_source7</key>
+      <value></value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>sd_spec7</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>time_source7</key>
+      <value></value>
     </param>
     <param>
-      <key>label10</key>
-      <value></value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width10</key>
+      <key>nchan</key>
       <value>1</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"dark blue"</value>
+      <key>num_mboards</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>type</key>
+      <value>fc32</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>samp_rate</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>stream_args</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(610, 254)</value>
+      <key>stream_chans</key>
+      <value>[]</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>sync</key>
+      <value></value>
+    </param>
+    <param>
+      <key>otw</key>
+      <value></value>
     </param>
   </block>
   <connection>
-    <source_block_id>uhd_usrp_source_0</source_block_id>
-    <sink_block_id>qtgui_const_sink_x_0</sink_block_id>
+    <source_block_id>blocks_multiply_const_vxx_0</source_block_id>
+    <sink_block_id>uhd_usrp_sink_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>uhd_usrp_source_0</source_block_id>
-    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
+    <source_block_id>blocks_uchar_to_float_0</source_block_id>
+    <sink_block_id>qtgui_time_sink_x_1</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_dxpsk_mod_0</source_block_id>
-    <sink_block_id>blocks_multiply_const_vxx_0</sink_block_id>
+    <source_block_id>blocks_unpacked_to_packed_xx_0</source_block_id>
+    <sink_block_id>blocks_uchar_to_float_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_multiply_const_vxx_0</source_block_id>
-    <sink_block_id>uhd_usrp_sink_0</sink_block_id>
+    <source_block_id>blocks_vector_source_x_0</source_block_id>
+    <sink_block_id>digital_dxpsk_mod_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>uhd_usrp_source_0</source_block_id>
-    <sink_block_id>digital_dxpsk_demod_0</sink_block_id>
+    <source_block_id>digital_dxpsk_demod_0</source_block_id>
+    <sink_block_id>blocks_unpacked_to_packed_xx_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>uhd_usrp_source_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_0</sink_block_id>
+    <source_block_id>digital_dxpsk_mod_0</source_block_id>
+    <sink_block_id>blocks_multiply_const_vxx_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_vector_source_x_0</source_block_id>
-    <sink_block_id>digital_dxpsk_mod_0</sink_block_id>
+    <source_block_id>uhd_usrp_source_0</source_block_id>
+    <sink_block_id>digital_dxpsk_demod_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_dxpsk_demod_0</source_block_id>
-    <sink_block_id>blocks_unpacked_to_packed_xx_0</sink_block_id>
+    <source_block_id>uhd_usrp_source_0</source_block_id>
+    <sink_block_id>qtgui_const_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_unpacked_to_packed_xx_0</source_block_id>
-    <sink_block_id>blocks_uchar_to_float_0</sink_block_id>
+    <source_block_id>uhd_usrp_source_0</source_block_id>
+    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_uchar_to_float_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_1</sink_block_id>
+    <source_block_id>uhd_usrp_source_0</source_block_id>
+    <sink_block_id>qtgui_time_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
diff --git a/gr-uhd/examples/grc/uhd_fft.grc b/gr-uhd/examples/grc/uhd_fft.grc
index 6c8fb94..64312d0 100644
--- a/gr-uhd/examples/grc/uhd_fft.grc
+++ b/gr-uhd/examples/grc/uhd_fft.grc
@@ -1,5 +1,5 @@
 <?xml version='1.0' encoding='utf-8'?>
-<?grc format='1' created='3.7.8'?>
+<?grc format='1' created='3.7.8rc1'?>
 <flow_graph>
   <timestamp>Sat Jul 12 16:12:28 2014</timestamp>
   <block>
@@ -13,6 +13,10 @@
       <value></value>
     </param>
     <param>
+      <key>window_size</key>
+      <value>1280, 1024</value>
+    </param>
+    <param>
       <key>category</key>
       <value>Custom</value>
     </param>
@@ -68,10 +72,6 @@
       <key>title</key>
       <value>UHD FFT</value>
     </param>
-    <param>
-      <key>window_size</key>
-      <value>1280, 1024</value>
-    </param>
   </block>
   <block>
     <key>variable_qtgui_chooser</key>
@@ -953,7 +953,7 @@
     </param>
     <param>
       <key>legend</key>
-      <value>True</value>
+      <value>False</value>
     </param>
     <param>
       <key>alpha1</key>
@@ -1125,7 +1125,7 @@
     </param>
     <param>
       <key>name</key>
-      <value>Spectrum</value>
+      <value></value>
     </param>
     <param>
       <key>nconnections</key>
@@ -1208,7 +1208,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(333, 436)</value>
+      <value>(312, 427)</value>
     </param>
     <param>
       <key>gui_hint</key>
@@ -1228,7 +1228,7 @@
     </param>
     <param>
       <key>legend</key>
-      <value>True</value>
+      <value>False</value>
     </param>
     <param>
       <key>alpha1</key>
@@ -1472,7 +1472,7 @@
     </param>
     <param>
       <key>name</key>
-      <value>QT GUI Plot</value>
+      <value></value>
     </param>
     <param>
       <key>nconnections</key>
@@ -1567,7 +1567,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(325, 328)</value>
+      <value>(320, 315)</value>
     </param>
     <param>
       <key>gui_hint</key>
@@ -1727,7 +1727,7 @@
     </param>
     <param>
       <key>name</key>
-      <value>Scope</value>
+      <value></value>
     </param>
     <param>
       <key>nconnections</key>
diff --git a/gr-uhd/examples/grc/uhd_rx_dpsk.grc 
b/gr-uhd/examples/grc/uhd_rx_dpsk.grc
index 96b92c4..2f37100 100644
--- a/gr-uhd/examples/grc/uhd_rx_dpsk.grc
+++ b/gr-uhd/examples/grc/uhd_rx_dpsk.grc
@@ -1,22 +1,27 @@
-<?xml version='1.0' encoding='ASCII'?>
+<?xml version='1.0' encoding='utf-8'?>
+<?grc format='1' created='3.7.8rc1'?>
 <flow_graph>
   <timestamp>Sat Jul 12 15:58:45 2014</timestamp>
   <block>
     <key>options</key>
     <param>
-      <key>id</key>
-      <value>uhd_rx_dpsk</value>
+      <key>author</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>title</key>
-      <value>UHD RX DPSK</value>
+      <key>window_size</key>
+      <value>1280, 1024</value>
     </param>
     <param>
-      <key>author</key>
+      <key>category</key>
+      <value>Custom</value>
+    </param>
+    <param>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
@@ -24,24 +29,24 @@
       <value></value>
     </param>
     <param>
-      <key>window_size</key>
-      <value>1280, 1024</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>generate_options</key>
-      <value>qt_gui</value>
+      <key>_coordinate</key>
+      <value>(-1, 0)</value>
     </param>
     <param>
-      <key>category</key>
-      <value>Custom</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>run_options</key>
-      <value>prompt</value>
+      <key>generate_options</key>
+      <value>qt_gui</value>
     </param>
     <param>
-      <key>run</key>
-      <value>True</value>
+      <key>id</key>
+      <value>uhd_rx_dpsk</value>
     </param>
     <param>
       <key>max_nouts</key>
@@ -52,779 +57,952 @@
       <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>run_options</key>
+      <value>prompt</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(-1, 0)</value>
+      <key>run</key>
+      <value>True</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>thread_safe_setters</key>
+      <value></value>
+    </param>
+    <param>
+      <key>title</key>
+      <value>UHD RX DPSK</value>
     </param>
   </block>
   <block>
     <key>variable</key>
     <param>
-      <key>id</key>
-      <value>rolloff</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>value</key>
-      <value>.35</value>
+      <key>_coordinate</key>
+      <value>(657, 579)</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(570, 579)</value>
+      <key>id</key>
+      <value>nfilts</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>value</key>
+      <value>32</value>
     </param>
   </block>
   <block>
     <key>variable</key>
     <param>
-      <key>id</key>
-      <value>samps_per_sym</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>value</key>
-      <value>4</value>
+      <key>_coordinate</key>
+      <value>(570, 579)</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(881, -1)</value>
+      <key>id</key>
+      <value>rolloff</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>value</key>
+      <value>.35</value>
     </param>
   </block>
   <block>
-    <key>variable</key>
+    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>nfilts</value>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>0</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>value</key>
-      <value>32</value>
+      <key>_coordinate</key>
+      <value>(134, 448)</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>gui_hint</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(657, 579)</value>
-    </param>
-    <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>parameter</key>
     <param>
       <key>id</key>
-      <value>address</value>
+      <value>rx_freq_off</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label</key>
+      <value>Rx Freq Offset (Hz)</value>
     </param>
     <param>
-      <key>label</key>
-      <value>IP Address</value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>value</key>
-      <value>addr=192.168.10.2</value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>type</key>
-      <value>string</value>
+      <key>start</key>
+      <value>-100e3</value>
     </param>
     <param>
-      <key>short_id</key>
-      <value>a</value>
+      <key>step</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>stop</key>
+      <value>100e3</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(158, 0)</value>
+      <key>rangeType</key>
+      <value>float</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
   </block>
   <block>
-    <key>parameter</key>
+    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>gain</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Default Gain</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>eng_float</value>
-    </param>
-    <param>
-      <key>short_id</key>
-      <value>g</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
       <key>_coordinate</key>
-      <value>(596, 0)</value>
+      <value>(881, -1)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>parameter</key>
     <param>
       <key>id</key>
-      <value>freq</value>
+      <value>samps_per_sym</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>value</key>
+      <value>4</value>
     </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
     <param>
-      <key>label</key>
-      <value>Default Frequency</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>value</key>
       <value>2.45e9</value>
     </param>
     <param>
-      <key>type</key>
-      <value>eng_float</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>short_id</key>
-      <value>f</value>
+      <key>_coordinate</key>
+      <value>(6, 448)</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>gui_hint</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(438, 0)</value>
-    </param>
-    <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>parameter</key>
     <param>
       <key>id</key>
-      <value>samp_rate</value>
+      <value>tun_freq</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label</key>
+      <value>UHD Freq (Hz)</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Sample Rate</value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>value</key>
-      <value>1e6</value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>type</key>
-      <value>eng_float</value>
+      <key>start</key>
+      <value>2.4e9</value>
     </param>
     <param>
-      <key>short_id</key>
-      <value>s</value>
+      <key>step</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>stop</key>
+      <value>2.5e9</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(311, 0)</value>
+      <key>rangeType</key>
+      <value>float</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
   </block>
   <block>
-    <key>parameter</key>
+    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>freq_offset</value>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>0</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Rx Frequency Offset</value>
+      <key>_coordinate</key>
+      <value>(286, 447)</value>
     </param>
     <param>
-      <key>value</key>
-      <value>0</value>
+      <key>gui_hint</key>
+      <value></value>
     </param>
     <param>
-      <key>type</key>
-      <value>eng_float</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>short_id</key>
-      <value>o</value>
+      <key>id</key>
+      <value>tun_gain</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value>UHD Tx Gain</value>
+    </param>
+    <param>
+      <key>min_len</key>
+      <value>200</value>
+    </param>
+    <param>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
+    </param>
+    <param>
+      <key>start</key>
+      <value>0</value>
     </param>
     <param>
+      <key>step</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>stop</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>rangeType</key>
+      <value>float</value>
+    </param>
+    <param>
+      <key>widget</key>
+      <value>counter_slider</value>
+    </param>
+  </block>
+  <block>
+    <key>parameter</key>
+    <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(720, 0)</value>
+      <value>(158, 0)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
+    <param>
+      <key>id</key>
+      <value>address</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value>IP Address</value>
+    </param>
+    <param>
+      <key>short_id</key>
+      <value>a</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>string</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>addr=192.168.10.2</value>
+    </param>
   </block>
   <block>
-    <key>variable_qtgui_range</key>
+    <key>blocks_null_sink</key>
     <param>
-      <key>id</key>
-      <value>tun_freq</value>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bus_conns</key>
+      <value>[[0,],]</value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>label</key>
-      <value>UHD Freq (Hz)</value>
+      <key>_coordinate</key>
+      <value>(620, 168)</value>
     </param>
     <param>
-      <key>value</key>
-      <value>2.45e9</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>start</key>
-      <value>2.4e9</value>
+      <key>id</key>
+      <value>blocks_null_sink_0</value>
     </param>
     <param>
-      <key>stop</key>
-      <value>2.5e9</value>
+      <key>type</key>
+      <value>byte</value>
     </param>
     <param>
-      <key>step</key>
+      <key>num_inputs</key>
       <value>1</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>digital_dxpsk_demod</key>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>gui_hint</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>excess_bw</key>
+      <value>0.35</value>
+    </param>
+    <param>
+      <key>freq_bw</key>
+      <value>6.28/100.0</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(6, 448)</value>
+      <value>(325, 112)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
+    <param>
+      <key>mod_code</key>
+      <value>"gray"</value>
+    </param>
     <param>
       <key>id</key>
-      <value>rx_freq_off</value>
+      <value>digital_dxpsk_demod_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>log</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Rx Freq Offset (Hz)</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>value</key>
+      <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>start</key>
-      <value>-100e3</value>
+      <key>phase_bw</key>
+      <value>6.28/100.0</value>
     </param>
     <param>
-      <key>stop</key>
-      <value>100e3</value>
+      <key>samples_per_symbol</key>
+      <value>samps_per_sym</value>
     </param>
     <param>
-      <key>step</key>
-      <value>1</value>
+      <key>sync_out</key>
+      <value>False</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>timing_bw</key>
+      <value>6.28/100.0</value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>type</key>
+      <value>dqpsk</value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>verbose</key>
+      <value>False</value>
     </param>
+  </block>
+  <block>
+    <key>parameter</key>
     <param>
-      <key>gui_hint</key>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(134, 448)</value>
+      <value>(438, 0)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
+    <param>
+      <key>id</key>
+      <value>freq</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value>Default Frequency</value>
+    </param>
+    <param>
+      <key>short_id</key>
+      <value>f</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>eng_float</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>2.45e9</value>
+    </param>
   </block>
   <block>
-    <key>variable_qtgui_range</key>
+    <key>parameter</key>
     <param>
-      <key>id</key>
-      <value>tun_gain</value>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
+      <key>_coordinate</key>
+      <value>(720, 0)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>freq_offset</value>
+    </param>
+    <param>
       <key>label</key>
-      <value>UHD Tx Gain</value>
+      <value>Rx Frequency Offset</value>
+    </param>
+    <param>
+      <key>short_id</key>
+      <value>o</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>eng_float</value>
     </param>
     <param>
       <key>value</key>
       <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>parameter</key>
     <param>
-      <key>start</key>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(596, 0)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>stop</key>
-      <value>20</value>
+      <key>id</key>
+      <value>gain</value>
     </param>
     <param>
-      <key>step</key>
-      <value>1</value>
+      <key>label</key>
+      <value>Default Gain</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>short_id</key>
+      <value>g</value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>type</key>
+      <value>eng_float</value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>value</key>
+      <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_freq_sink_x</key>
     <param>
-      <key>gui_hint</key>
-      <value></value>
+      <key>autoscale</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>average</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>bw</key>
+      <value>samp_rate</value>
     </param>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
+      <key>fc</key>
+      <value>tun_freq</value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>ctrlpanel</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>fftsize</key>
+      <value>1024</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(286, 447)</value>
+      <value>(340, 283)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value></value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>uhd_usrp_source</key>
+    <param>
+      <key>grid</key>
+      <value>False</value>
+    </param>
     <param>
       <key>id</key>
-      <value>uhd_usrp_source_0</value>
+      <value>qtgui_freq_sink_x_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>type</key>
-      <value>fc32</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>otw</key>
-      <value></value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>stream_args</key>
+      <key>label1</key>
       <value></value>
     </param>
     <param>
-      <key>stream_chans</key>
-      <value>[]</value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>dev_addr</key>
-      <value>address</value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>dev_args</key>
-      <value>""</value>
+      <key>color10</key>
+      <value>"dark blue"</value>
     </param>
     <param>
-      <key>sync</key>
+      <key>label10</key>
       <value></value>
     </param>
     <param>
-      <key>clock_rate</key>
-      <value>0.0</value>
-    </param>
-    <param>
-      <key>num_mboards</key>
+      <key>width10</key>
       <value>1</value>
     </param>
     <param>
-      <key>clock_source0</key>
-      <value></value>
-    </param>
-    <param>
-      <key>time_source0</key>
-      <value></value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>sd_spec0</key>
-      <value></value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>clock_source1</key>
+      <key>label2</key>
       <value></value>
     </param>
     <param>
-      <key>time_source1</key>
-      <value></value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>sd_spec1</key>
-      <value></value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>clock_source2</key>
-      <value></value>
+      <key>color3</key>
+      <value>"green"</value>
     </param>
     <param>
-      <key>time_source2</key>
+      <key>label3</key>
       <value></value>
     </param>
     <param>
-      <key>sd_spec2</key>
-      <value></value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>clock_source3</key>
-      <value></value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>time_source3</key>
-      <value></value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
-      <key>sd_spec3</key>
+      <key>label4</key>
       <value></value>
     </param>
     <param>
-      <key>clock_source4</key>
-      <value></value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>time_source4</key>
-      <value></value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>sd_spec4</key>
-      <value></value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
     <param>
-      <key>clock_source5</key>
+      <key>label5</key>
       <value></value>
     </param>
     <param>
-      <key>time_source5</key>
-      <value></value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>sd_spec5</key>
-      <value></value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>clock_source6</key>
-      <value></value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
     <param>
-      <key>time_source6</key>
+      <key>label6</key>
       <value></value>
     </param>
     <param>
-      <key>sd_spec6</key>
-      <value></value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>clock_source7</key>
-      <value></value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>time_source7</key>
-      <value></value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
-      <key>sd_spec7</key>
+      <key>label7</key>
       <value></value>
     </param>
     <param>
-      <key>nchan</key>
+      <key>width7</key>
       <value>1</value>
     </param>
     <param>
-      <key>samp_rate</key>
-      <value>samp_rate</value>
-    </param>
-    <param>
-      <key>center_freq0</key>
-      <value>tun_freq+rx_freq_off</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>gain0</key>
-      <value>tun_gain</value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
     <param>
-      <key>ant0</key>
+      <key>label8</key>
       <value></value>
     </param>
     <param>
-      <key>bw0</key>
-      <value>0</value>
+      <key>width8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>center_freq1</key>
-      <value>0</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>gain1</key>
-      <value>0</value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
     <param>
-      <key>ant1</key>
+      <key>label9</key>
       <value></value>
     </param>
     <param>
-      <key>bw1</key>
-      <value>0</value>
+      <key>width9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>center_freq2</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain2</key>
+      <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant2</key>
-      <value></value>
+      <key>name</key>
+      <value>""</value>
     </param>
     <param>
-      <key>bw2</key>
-      <value>0</value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>center_freq3</key>
-      <value>0</value>
+      <key>showports</key>
+      <value>True</value>
     </param>
     <param>
-      <key>gain3</key>
-      <value>0</value>
+      <key>freqhalf</key>
+      <value>True</value>
     </param>
     <param>
-      <key>ant3</key>
-      <value></value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>bw3</key>
-      <value>0</value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>center_freq4</key>
-      <value>0</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
     </param>
     <param>
-      <key>gain4</key>
-      <value>0</value>
+      <key>tr_tag</key>
+      <value>""</value>
     </param>
     <param>
-      <key>ant4</key>
-      <value></value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>bw4</key>
-      <value>0</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>center_freq5</key>
-      <value>0</value>
+      <key>wintype</key>
+      <value>firdes.WIN_BLACKMAN_hARRIS</value>
     </param>
     <param>
-      <key>gain5</key>
-      <value>0</value>
+      <key>ymax</key>
+      <value>10</value>
     </param>
     <param>
-      <key>ant5</key>
-      <value></value>
+      <key>ymin</key>
+      <value>-140</value>
     </param>
+  </block>
+  <block>
+    <key>parameter</key>
     <param>
-      <key>bw5</key>
-      <value>0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>center_freq6</key>
-      <value>0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>gain6</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>ant6</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(311, 0)</value>
     </param>
     <param>
-      <key>bw6</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq7</key>
-      <value>0</value>
+      <key>id</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>gain7</key>
-      <value>0</value>
+      <key>label</key>
+      <value>Sample Rate</value>
     </param>
     <param>
-      <key>ant7</key>
-      <value></value>
+      <key>short_id</key>
+      <value>s</value>
     </param>
     <param>
-      <key>bw7</key>
-      <value>0</value>
+      <key>type</key>
+      <value>eng_float</value>
     </param>
     <param>
-      <key>center_freq8</key>
-      <value>0</value>
+      <key>value</key>
+      <value>1e6</value>
     </param>
+  </block>
+  <block>
+    <key>uhd_usrp_source</key>
     <param>
-      <key>gain8</key>
-      <value>0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>ant8</key>
+      <key>ant0</key>
       <value></value>
     </param>
     <param>
-      <key>bw8</key>
+      <key>bw0</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq9</key>
-      <value>0</value>
+      <key>center_freq0</key>
+      <value>tun_freq+rx_freq_off</value>
     </param>
     <param>
-      <key>gain9</key>
-      <value>0</value>
+      <key>norm_gain0</key>
+      <value>False</value>
     </param>
     <param>
-      <key>ant9</key>
+      <key>gain0</key>
+      <value>tun_gain</value>
+    </param>
+    <param>
+      <key>ant10</key>
       <value></value>
     </param>
     <param>
-      <key>bw9</key>
+      <key>bw10</key>
       <value>0</value>
     </param>
     <param>
@@ -832,15 +1010,19 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain10</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain10</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant10</key>
+      <key>ant11</key>
       <value></value>
     </param>
     <param>
-      <key>bw10</key>
+      <key>bw11</key>
       <value>0</value>
     </param>
     <param>
@@ -848,15 +1030,19 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain11</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain11</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant11</key>
+      <key>ant12</key>
       <value></value>
     </param>
     <param>
-      <key>bw11</key>
+      <key>bw12</key>
       <value>0</value>
     </param>
     <param>
@@ -864,15 +1050,19 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain12</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain12</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant12</key>
+      <key>ant13</key>
       <value></value>
     </param>
     <param>
-      <key>bw12</key>
+      <key>bw13</key>
       <value>0</value>
     </param>
     <param>
@@ -880,15 +1070,19 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain13</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain13</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant13</key>
+      <key>ant14</key>
       <value></value>
     </param>
     <param>
-      <key>bw13</key>
+      <key>bw14</key>
       <value>0</value>
     </param>
     <param>
@@ -896,15 +1090,19 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain14</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain14</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant14</key>
+      <key>ant15</key>
       <value></value>
     </param>
     <param>
-      <key>bw14</key>
+      <key>bw15</key>
       <value>0</value>
     </param>
     <param>
@@ -912,15 +1110,19 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain15</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain15</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant15</key>
+      <key>ant16</key>
       <value></value>
     </param>
     <param>
-      <key>bw15</key>
+      <key>bw16</key>
       <value>0</value>
     </param>
     <param>
@@ -928,15 +1130,19 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain16</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain16</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant16</key>
+      <key>ant17</key>
       <value></value>
     </param>
     <param>
-      <key>bw16</key>
+      <key>bw17</key>
       <value>0</value>
     </param>
     <param>
@@ -944,15 +1150,19 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain17</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain17</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant17</key>
+      <key>ant18</key>
       <value></value>
     </param>
     <param>
-      <key>bw17</key>
+      <key>bw18</key>
       <value>0</value>
     </param>
     <param>
@@ -960,15 +1170,19 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain18</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain18</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant18</key>
+      <key>ant19</key>
       <value></value>
     </param>
     <param>
-      <key>bw18</key>
+      <key>bw19</key>
       <value>0</value>
     </param>
     <param>
@@ -976,23 +1190,31 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain19</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain19</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant19</key>
+      <key>ant1</key>
       <value></value>
     </param>
     <param>
-      <key>bw19</key>
+      <key>bw1</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq20</key>
+      <key>center_freq1</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain20</key>
+      <key>norm_gain1</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain1</key>
       <value>0</value>
     </param>
     <param>
@@ -1004,11 +1226,15 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq21</key>
+      <key>center_freq20</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain21</key>
+      <key>norm_gain20</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain20</key>
       <value>0</value>
     </param>
     <param>
@@ -1020,11 +1246,15 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq22</key>
+      <key>center_freq21</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain22</key>
+      <key>norm_gain21</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain21</key>
       <value>0</value>
     </param>
     <param>
@@ -1036,11 +1266,15 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq23</key>
+      <key>center_freq22</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain23</key>
+      <key>norm_gain22</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain22</key>
       <value>0</value>
     </param>
     <param>
@@ -1052,11 +1286,15 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq24</key>
+      <key>center_freq23</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain24</key>
+      <key>norm_gain23</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain23</key>
       <value>0</value>
     </param>
     <param>
@@ -1068,11 +1306,15 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq25</key>
+      <key>center_freq24</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain25</key>
+      <key>norm_gain24</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain24</key>
       <value>0</value>
     </param>
     <param>
@@ -1084,11 +1326,15 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq26</key>
+      <key>center_freq25</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain26</key>
+      <key>norm_gain25</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain25</key>
       <value>0</value>
     </param>
     <param>
@@ -1100,11 +1346,15 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq27</key>
+      <key>center_freq26</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain27</key>
+      <key>norm_gain26</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain26</key>
       <value>0</value>
     </param>
     <param>
@@ -1116,11 +1366,15 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq28</key>
+      <key>center_freq27</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain28</key>
+      <key>norm_gain27</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain27</key>
       <value>0</value>
     </param>
     <param>
@@ -1132,11 +1386,15 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq29</key>
+      <key>center_freq28</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain29</key>
+      <key>norm_gain28</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain28</key>
       <value>0</value>
     </param>
     <param>
@@ -1148,417 +1406,388 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq30</key>
+      <key>center_freq29</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain30</key>
-      <value>0</value>
+      <key>norm_gain29</key>
+      <value>False</value>
     </param>
     <param>
-      <key>ant30</key>
-      <value></value>
+      <key>gain29</key>
+      <value>0</value>
     </param>
     <param>
-      <key>bw30</key>
-      <value>0</value>
+      <key>ant2</key>
+      <value></value>
     </param>
     <param>
-      <key>center_freq31</key>
+      <key>bw2</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain31</key>
+      <key>center_freq2</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant31</key>
-      <value></value>
+      <key>norm_gain2</key>
+      <value>False</value>
     </param>
     <param>
-      <key>bw31</key>
+      <key>gain2</key>
       <value>0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
+      <key>ant30</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>bw30</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>center_freq30</key>
       <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(0, 143)</value>
+      <key>norm_gain30</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>gain30</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_null_sink</key>
-    <param>
-      <key>id</key>
-      <value>blocks_null_sink_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>ant31</key>
+      <value></value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>bw31</key>
+      <value>0</value>
     </param>
     <param>
-      <key>num_inputs</key>
-      <value>1</value>
+      <key>center_freq31</key>
+      <value>0</value>
     </param>
     <param>
-      <key>bus_conns</key>
-      <value>[[0,],]</value>
+      <key>norm_gain31</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>gain31</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>ant3</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(620, 168)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
+      <key>bw3</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_dxpsk_demod</key>
     <param>
-      <key>id</key>
-      <value>digital_dxpsk_demod_0</value>
+      <key>center_freq3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>norm_gain3</key>
+      <value>False</value>
     </param>
     <param>
-      <key>type</key>
-      <value>dqpsk</value>
+      <key>gain3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>samples_per_symbol</key>
-      <value>samps_per_sym</value>
+      <key>ant4</key>
+      <value></value>
     </param>
     <param>
-      <key>excess_bw</key>
-      <value>0.35</value>
+      <key>bw4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>freq_bw</key>
-      <value>6.28/100.0</value>
+      <key>center_freq4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>phase_bw</key>
-      <value>6.28/100.0</value>
+      <key>norm_gain4</key>
+      <value>False</value>
     </param>
     <param>
-      <key>timing_bw</key>
-      <value>6.28/100.0</value>
+      <key>gain4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>mod_code</key>
-      <value>"gray"</value>
+      <key>ant5</key>
+      <value></value>
     </param>
     <param>
-      <key>verbose</key>
-      <value>False</value>
+      <key>bw5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>log</key>
-      <value>False</value>
+      <key>center_freq5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>sync_out</key>
+      <key>norm_gain5</key>
       <value>False</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>gain5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>ant6</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>bw6</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>center_freq6</key>
       <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(325, 112)</value>
+      <key>norm_gain6</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>gain6</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_freq_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_freq_sink_x_0</value>
+      <key>ant7</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>bw7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>center_freq7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>name</key>
-      <value>""</value>
+      <key>norm_gain7</key>
+      <value>False</value>
     </param>
     <param>
-      <key>fftsize</key>
-      <value>1024</value>
+      <key>gain7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>wintype</key>
-      <value>firdes.WIN_BLACKMAN_hARRIS</value>
+      <key>ant8</key>
+      <value></value>
     </param>
     <param>
-      <key>fc</key>
-      <value>tun_freq</value>
+      <key>bw8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>bw</key>
-      <value>samp_rate</value>
+      <key>center_freq8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>autoscale</key>
+      <key>norm_gain8</key>
       <value>False</value>
     </param>
     <param>
-      <key>average</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>ymin</key>
-      <value>-140</value>
+      <key>gain8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>10</value>
+      <key>ant9</key>
+      <value></value>
     </param>
     <param>
-      <key>nconnections</key>
-      <value>1</value>
+      <key>bw9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>center_freq9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value></value>
+      <key>norm_gain9</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label1</key>
-      <value></value>
+      <key>gain9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width1</key>
-      <value>1</value>
+      <key>clock_rate</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>label2</key>
-      <value></value>
+      <key>dev_addr</key>
+      <value>address</value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>dev_args</key>
+      <value>""</value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>_coordinate</key>
+      <value>(0, 143)</value>
     </param>
     <param>
-      <key>label3</key>
-      <value></value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>id</key>
+      <value>uhd_usrp_source_0</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>clock_source0</key>
+      <value></value>
     </param>
     <param>
-      <key>label4</key>
+      <key>sd_spec0</key>
       <value></value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>time_source0</key>
+      <value></value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>clock_source1</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>sd_spec1</key>
+      <value></value>
     </param>
     <param>
-      <key>label5</key>
+      <key>time_source1</key>
       <value></value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>clock_source2</key>
+      <value></value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>sd_spec2</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>time_source2</key>
+      <value></value>
     </param>
     <param>
-      <key>label6</key>
+      <key>clock_source3</key>
       <value></value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>sd_spec3</key>
+      <value></value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
+      <key>time_source3</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>clock_source4</key>
+      <value></value>
     </param>
     <param>
-      <key>label7</key>
+      <key>sd_spec4</key>
       <value></value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>time_source4</key>
+      <value></value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>clock_source5</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>sd_spec5</key>
+      <value></value>
     </param>
     <param>
-      <key>label8</key>
+      <key>time_source5</key>
       <value></value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>clock_source6</key>
+      <value></value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>sd_spec6</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>time_source6</key>
+      <value></value>
     </param>
     <param>
-      <key>label9</key>
+      <key>clock_source7</key>
       <value></value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>sd_spec7</key>
+      <value></value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>time_source7</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label10</key>
-      <value></value>
+      <key>nchan</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width10</key>
+      <key>num_mboards</key>
       <value>1</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"dark blue"</value>
+      <key>type</key>
+      <value>fc32</value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>samp_rate</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>stream_args</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>stream_chans</key>
+      <value>[]</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(340, 283)</value>
+      <key>sync</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>otw</key>
+      <value></value>
     </param>
   </block>
   <connection>
diff --git a/gr-uhd/examples/grc/uhd_two_tone_loopback.grc 
b/gr-uhd/examples/grc/uhd_two_tone_loopback.grc
index f164d85..055828a 100644
--- a/gr-uhd/examples/grc/uhd_two_tone_loopback.grc
+++ b/gr-uhd/examples/grc/uhd_two_tone_loopback.grc
@@ -1,1511 +1,1998 @@
-<?xml version='1.0' encoding='ASCII'?>
+<?xml version='1.0' encoding='utf-8'?>
+<?grc format='1' created='3.7.8rc1'?>
 <flow_graph>
   <timestamp>Sat Jul 12 14:48:02 2014</timestamp>
   <block>
     <key>options</key>
     <param>
+      <key>author</key>
+      <value>Example</value>
+    </param>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>window_size</key>
+      <value>1280, 1024</value>
+    </param>
+    <param>
+      <key>category</key>
+      <value>Custom</value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>description</key>
+      <value>Loopback test</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(1, 0)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>generate_options</key>
+      <value>qt_gui</value>
+    </param>
+    <param>
       <key>id</key>
       <value>uhd_two_tone_loopback</value>
     </param>
     <param>
-      <key>_enabled</key>
+      <key>max_nouts</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>realtime_scheduling</key>
+      <value></value>
+    </param>
+    <param>
+      <key>run_options</key>
+      <value>prompt</value>
+    </param>
+    <param>
+      <key>run</key>
       <value>True</value>
     </param>
     <param>
+      <key>thread_safe_setters</key>
+      <value></value>
+    </param>
+    <param>
       <key>title</key>
       <value>UHD Loopback - 2 Tone</value>
     </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
     <param>
-      <key>author</key>
-      <value>Example</value>
+      <key>value</key>
+      <value>0.1</value>
     </param>
     <param>
-      <key>description</key>
-      <value>Loopback test</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>window_size</key>
-      <value>1280, 1024</value>
+      <key>_coordinate</key>
+      <value>(0, 283)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>1,0,1,2</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>noise_ampl</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value>Noise Amplitude</value>
+    </param>
+    <param>
+      <key>min_len</key>
+      <value>200</value>
+    </param>
+    <param>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
+    </param>
+    <param>
+      <key>start</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>step</key>
+      <value>.001</value>
+    </param>
+    <param>
+      <key>stop</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>rangeType</key>
+      <value>float</value>
+    </param>
+    <param>
+      <key>widget</key>
+      <value>counter_slider</value>
+    </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>samp_rate/4</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(1, 131)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>0,0,1,2</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>tone1</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value>Tone 1</value>
+    </param>
+    <param>
+      <key>min_len</key>
+      <value>200</value>
+    </param>
+    <param>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
+    </param>
+    <param>
+      <key>start</key>
+      <value>-samp_rate/2</value>
+    </param>
+    <param>
+      <key>step</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>stop</key>
+      <value>samp_rate/2</value>
+    </param>
+    <param>
+      <key>rangeType</key>
+      <value>float</value>
+    </param>
+    <param>
+      <key>widget</key>
+      <value>counter_slider</value>
+    </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>samp_rate/5</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(126, 132)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>0,2,1,2</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>tone2</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value>Tone 2</value>
+    </param>
+    <param>
+      <key>min_len</key>
+      <value>200</value>
+    </param>
+    <param>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
+    </param>
+    <param>
+      <key>start</key>
+      <value>-samp_rate/2</value>
+    </param>
+    <param>
+      <key>step</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>stop</key>
+      <value>samp_rate/2</value>
+    </param>
+    <param>
+      <key>rangeType</key>
+      <value>float</value>
+    </param>
+    <param>
+      <key>widget</key>
+      <value>counter_slider</value>
+    </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>0.15</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(152, 286)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>1,2,1,2</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>tone_ampl</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value>Tone Amplitude</value>
+    </param>
+    <param>
+      <key>min_len</key>
+      <value>200</value>
+    </param>
+    <param>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
+    </param>
+    <param>
+      <key>start</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>step</key>
+      <value>.001</value>
+    </param>
+    <param>
+      <key>stop</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>rangeType</key>
+      <value>float</value>
+    </param>
+    <param>
+      <key>widget</key>
+      <value>counter_slider</value>
+    </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>2.45e9</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(80, 431)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>3,0,1,4</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>tun_freq</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value>UHD Freq (Hz)</value>
+    </param>
+    <param>
+      <key>min_len</key>
+      <value>200</value>
+    </param>
+    <param>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
+    </param>
+    <param>
+      <key>start</key>
+      <value>2.4e9</value>
+    </param>
+    <param>
+      <key>step</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>stop</key>
+      <value>2.5e9</value>
+    </param>
+    <param>
+      <key>rangeType</key>
+      <value>float</value>
+    </param>
+    <param>
+      <key>widget</key>
+      <value>counter_slider</value>
+    </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(120, 571)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>4,2,1,2</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>tun_rx_gain</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value>UHD Rx Gain</value>
+    </param>
+    <param>
+      <key>min_len</key>
+      <value>200</value>
+    </param>
+    <param>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
+    </param>
+    <param>
+      <key>start</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>step</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>stop</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>rangeType</key>
+      <value>float</value>
+    </param>
+    <param>
+      <key>widget</key>
+      <value>counter_slider</value>
+    </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(-1, 573)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>4,0,1,2</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>tun_tx_gain</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value>UHD Tx Gain</value>
+    </param>
+    <param>
+      <key>min_len</key>
+      <value>200</value>
+    </param>
+    <param>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
+    </param>
+    <param>
+      <key>start</key>
+      <value>0</value>
     </param>
     <param>
-      <key>generate_options</key>
-      <value>qt_gui</value>
+      <key>step</key>
+      <value>1</value>
     </param>
     <param>
-      <key>category</key>
-      <value>Custom</value>
+      <key>stop</key>
+      <value>20</value>
     </param>
     <param>
-      <key>run_options</key>
-      <value>prompt</value>
+      <key>rangeType</key>
+      <value>float</value>
     </param>
     <param>
-      <key>run</key>
-      <value>True</value>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
+  </block>
+  <block>
+    <key>parameter</key>
     <param>
-      <key>max_nouts</key>
-      <value>0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>realtime_scheduling</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1, 0)</value>
+      <value>(177, 0)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>parameter</key>
     <param>
       <key>id</key>
-      <value>samp_rate</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>address0</value>
     </param>
     <param>
       <key>label</key>
-      <value>Sample Rate</value>
+      <value>IP Address, Dev 0</value>
     </param>
     <param>
-      <key>value</key>
-      <value>500e3</value>
+      <key>short_id</key>
+      <value></value>
     </param>
     <param>
       <key>type</key>
-      <value>eng_float</value>
+      <value>string</value>
     </param>
     <param>
-      <key>short_id</key>
-      <value>s</value>
+      <key>value</key>
+      <value>addr=192.168.10.2</value>
     </param>
+  </block>
+  <block>
+    <key>parameter</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(523, 0)</value>
+      <value>(337, 0)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>parameter</key>
     <param>
       <key>id</key>
-      <value>rx_gain</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>address1</value>
     </param>
     <param>
       <key>label</key>
-      <value>Default RX Gain</value>
+      <value>IP Address, Dev 1</value>
     </param>
     <param>
-      <key>value</key>
-      <value>0</value>
+      <key>short_id</key>
+      <value></value>
     </param>
     <param>
       <key>type</key>
-      <value>eng_float</value>
+      <value>string</value>
     </param>
     <param>
-      <key>short_id</key>
-      <value></value>
+      <key>value</key>
+      <value>addr=192.168.10.2</value>
     </param>
+  </block>
+  <block>
+    <key>analog_noise_source_x</key>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>amp</key>
+      <value>noise_ampl</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1123, 0)</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>comment</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>parameter</key>
     <param>
-      <key>id</key>
-      <value>freq_offset</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Rx Frequency Offset</value>
+      <key>_coordinate</key>
+      <value>(551, 324)</value>
     </param>
     <param>
-      <key>value</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>eng_float</value>
+      <key>id</key>
+      <value>analog_noise_source_x_0</value>
     </param>
     <param>
-      <key>short_id</key>
-      <value>o</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(804, 0)</value>
+      <key>noise_type</key>
+      <value>analog.GR_GAUSSIAN</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
-  </block>
-  <block>
-    <key>parameter</key>
     <param>
-      <key>id</key>
-      <value>freq</value>
+      <key>seed</key>
+      <value>-42</value>
     </param>
+  </block>
+  <block>
+    <key>analog_sig_source_x</key>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>amp</key>
+      <value>tone_ampl</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Default Frequency</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>value</key>
-      <value>2.45e9</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>type</key>
-      <value>eng_float</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>short_id</key>
-      <value>f</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>freq</key>
+      <value>tone1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(649, 0)</value>
+      <value>(541, 98)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>parameter</key>
     <param>
       <key>id</key>
-      <value>tx_gain</value>
+      <value>analog_sig_source_x_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Default TX Gain</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>value</key>
+      <key>offset</key>
       <value>0</value>
     </param>
     <param>
       <key>type</key>
-      <value>eng_float</value>
+      <value>complex</value>
     </param>
     <param>
-      <key>short_id</key>
-      <value></value>
+      <key>samp_rate</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>waveform</key>
+      <value>analog.GR_COS_WAVE</value>
+    </param>
+  </block>
+  <block>
+    <key>analog_sig_source_x</key>
+    <param>
+      <key>amp</key>
+      <value>tone_ampl</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(983, 0)</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>comment</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>parameter</key>
     <param>
-      <key>id</key>
-      <value>address0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>label</key>
-      <value>IP Address, Dev 0</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>addr=192.168.10.2</value>
+      <key>freq</key>
+      <value>tone2</value>
     </param>
     <param>
-      <key>type</key>
-      <value>string</value>
+      <key>_coordinate</key>
+      <value>(542, 209)</value>
     </param>
     <param>
-      <key>short_id</key>
-      <value></value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>id</key>
+      <value>analog_sig_source_x_1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(177, 0)</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>minoutbuf</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>parameter</key>
     <param>
-      <key>id</key>
-      <value>address1</value>
+      <key>offset</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>label</key>
-      <value>IP Address, Dev 1</value>
+      <key>samp_rate</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>value</key>
-      <value>addr=192.168.10.2</value>
+      <key>waveform</key>
+      <value>analog.GR_COS_WAVE</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_add_xx</key>
     <param>
-      <key>type</key>
-      <value>string</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>short_id</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>alias</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(337, 0)</value>
+      <value>(806, 134)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>uhd_usrp_source</key>
     <param>
       <key>id</key>
-      <value>uhd_usrp_source_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>blocks_add_xx</value>
     </param>
     <param>
       <key>type</key>
-      <value>fc32</value>
+      <value>complex</value>
     </param>
     <param>
-      <key>otw</key>
-      <value></value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>stream_args</key>
-      <value></value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>stream_chans</key>
-      <value>[]</value>
+      <key>num_inputs</key>
+      <value>3</value>
     </param>
     <param>
-      <key>dev_addr</key>
-      <value>address1</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>parameter</key>
     <param>
-      <key>dev_args</key>
-      <value>""</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>sync</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>clock_rate</key>
-      <value>0.0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>num_mboards</key>
-      <value>1</value>
+      <key>_coordinate</key>
+      <value>(649, 0)</value>
     </param>
     <param>
-      <key>clock_source0</key>
-      <value></value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>time_source0</key>
-      <value></value>
+      <key>id</key>
+      <value>freq</value>
     </param>
     <param>
-      <key>sd_spec0</key>
-      <value>B:0</value>
+      <key>label</key>
+      <value>Default Frequency</value>
     </param>
     <param>
-      <key>clock_source1</key>
-      <value></value>
+      <key>short_id</key>
+      <value>f</value>
     </param>
     <param>
-      <key>time_source1</key>
-      <value></value>
+      <key>type</key>
+      <value>eng_float</value>
     </param>
     <param>
-      <key>sd_spec1</key>
-      <value></value>
+      <key>value</key>
+      <value>2.45e9</value>
     </param>
+  </block>
+  <block>
+    <key>parameter</key>
     <param>
-      <key>clock_source2</key>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>time_source2</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>sd_spec2</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>clock_source3</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(804, 0)</value>
     </param>
     <param>
-      <key>time_source3</key>
-      <value></value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>sd_spec3</key>
-      <value></value>
+      <key>id</key>
+      <value>freq_offset</value>
     </param>
     <param>
-      <key>clock_source4</key>
-      <value></value>
+      <key>label</key>
+      <value>Rx Frequency Offset</value>
     </param>
     <param>
-      <key>time_source4</key>
-      <value></value>
+      <key>short_id</key>
+      <value>o</value>
     </param>
     <param>
-      <key>sd_spec4</key>
-      <value></value>
+      <key>type</key>
+      <value>eng_float</value>
     </param>
     <param>
-      <key>clock_source5</key>
-      <value></value>
+      <key>value</key>
+      <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_freq_sink_x</key>
     <param>
-      <key>time_source5</key>
-      <value></value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
-      <key>sd_spec5</key>
-      <value></value>
+      <key>average</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>clock_source6</key>
-      <value></value>
+      <key>bw</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>time_source6</key>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>sd_spec6</key>
-      <value></value>
+      <key>fc</key>
+      <value>0</value>
     </param>
     <param>
-      <key>clock_source7</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>time_source7</key>
-      <value></value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
     <param>
-      <key>sd_spec7</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>nchan</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>samp_rate</key>
-      <value>samp_rate</value>
-    </param>
-    <param>
-      <key>center_freq0</key>
-      <value>tun_freq</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>gain0</key>
-      <value>tun_rx_gain</value>
+      <key>fftsize</key>
+      <value>1024</value>
     </param>
     <param>
-      <key>ant0</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(1086, 281)</value>
     </param>
     <param>
-      <key>bw0</key>
-      <value>0</value>
+      <key>gui_hint</key>
+      <value>2,0,1,4</value>
     </param>
     <param>
-      <key>center_freq1</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain1</key>
-      <value>0</value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>ant1</key>
-      <value></value>
+      <key>id</key>
+      <value>qtgui_freq_sink_x_0</value>
     </param>
     <param>
-      <key>bw1</key>
-      <value>0</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>center_freq2</key>
-      <value>0</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>gain2</key>
-      <value>0</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>ant2</key>
+      <key>label1</key>
       <value></value>
     </param>
     <param>
-      <key>bw2</key>
-      <value>0</value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>center_freq3</key>
-      <value>0</value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>gain3</key>
-      <value>0</value>
+      <key>color10</key>
+      <value>"dark blue"</value>
     </param>
     <param>
-      <key>ant3</key>
+      <key>label10</key>
       <value></value>
     </param>
     <param>
-      <key>bw3</key>
-      <value>0</value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>center_freq4</key>
-      <value>0</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>gain4</key>
-      <value>0</value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>ant4</key>
+      <key>label2</key>
       <value></value>
     </param>
     <param>
-      <key>bw4</key>
-      <value>0</value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>center_freq5</key>
-      <value>0</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>gain5</key>
-      <value>0</value>
+      <key>color3</key>
+      <value>"green"</value>
     </param>
     <param>
-      <key>ant5</key>
+      <key>label3</key>
       <value></value>
     </param>
     <param>
-      <key>bw5</key>
-      <value>0</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>center_freq6</key>
-      <value>0</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>gain6</key>
-      <value>0</value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
-      <key>ant6</key>
+      <key>label4</key>
       <value></value>
     </param>
     <param>
-      <key>bw6</key>
-      <value>0</value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>center_freq7</key>
-      <value>0</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>gain7</key>
-      <value>0</value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
     <param>
-      <key>ant7</key>
+      <key>label5</key>
       <value></value>
     </param>
     <param>
-      <key>bw7</key>
-      <value>0</value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>center_freq8</key>
-      <value>0</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>gain8</key>
-      <value>0</value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
     <param>
-      <key>ant8</key>
+      <key>label6</key>
       <value></value>
     </param>
     <param>
-      <key>bw8</key>
-      <value>0</value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>center_freq9</key>
-      <value>0</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>gain9</key>
-      <value>0</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
-      <key>ant9</key>
+      <key>label7</key>
       <value></value>
     </param>
     <param>
-      <key>bw9</key>
-      <value>0</value>
+      <key>width7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>center_freq10</key>
-      <value>0</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>gain10</key>
-      <value>0</value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
     <param>
-      <key>ant10</key>
+      <key>label8</key>
       <value></value>
     </param>
     <param>
-      <key>bw10</key>
-      <value>0</value>
+      <key>width8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>center_freq11</key>
-      <value>0</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>gain11</key>
-      <value>0</value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
     <param>
-      <key>ant11</key>
+      <key>label9</key>
       <value></value>
     </param>
     <param>
-      <key>bw11</key>
-      <value>0</value>
+      <key>width9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>center_freq12</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain12</key>
+      <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant12</key>
-      <value></value>
+      <key>name</key>
+      <value>""</value>
     </param>
     <param>
-      <key>bw12</key>
-      <value>0</value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>center_freq13</key>
-      <value>0</value>
+      <key>showports</key>
+      <value>True</value>
     </param>
     <param>
-      <key>gain13</key>
-      <value>0</value>
+      <key>freqhalf</key>
+      <value>True</value>
     </param>
     <param>
-      <key>ant13</key>
-      <value></value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>bw13</key>
-      <value>0</value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>center_freq14</key>
-      <value>0</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
     </param>
     <param>
-      <key>gain14</key>
-      <value>0</value>
+      <key>tr_tag</key>
+      <value>""</value>
     </param>
     <param>
-      <key>ant14</key>
-      <value></value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>bw14</key>
-      <value>0</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>center_freq15</key>
-      <value>0</value>
+      <key>wintype</key>
+      <value>firdes.WIN_BLACKMAN_hARRIS</value>
     </param>
     <param>
-      <key>gain15</key>
-      <value>0</value>
+      <key>ymax</key>
+      <value>10</value>
     </param>
     <param>
-      <key>ant15</key>
-      <value></value>
+      <key>ymin</key>
+      <value>-140</value>
     </param>
+  </block>
+  <block>
+    <key>parameter</key>
     <param>
-      <key>bw15</key>
-      <value>0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>center_freq16</key>
-      <value>0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>gain16</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>ant16</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(1123, 0)</value>
     </param>
     <param>
-      <key>bw16</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq17</key>
-      <value>0</value>
+      <key>id</key>
+      <value>rx_gain</value>
     </param>
     <param>
-      <key>gain17</key>
-      <value>0</value>
+      <key>label</key>
+      <value>Default RX Gain</value>
     </param>
     <param>
-      <key>ant17</key>
+      <key>short_id</key>
       <value></value>
     </param>
     <param>
-      <key>bw17</key>
-      <value>0</value>
+      <key>type</key>
+      <value>eng_float</value>
     </param>
     <param>
-      <key>center_freq18</key>
+      <key>value</key>
       <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>parameter</key>
     <param>
-      <key>gain18</key>
-      <value>0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>ant18</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>bw18</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>center_freq19</key>
-      <value>0</value>
+      <key>_coordinate</key>
+      <value>(523, 0)</value>
     </param>
     <param>
-      <key>gain19</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant19</key>
-      <value></value>
+      <key>id</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>bw19</key>
-      <value>0</value>
+      <key>label</key>
+      <value>Sample Rate</value>
     </param>
     <param>
-      <key>center_freq20</key>
-      <value>0</value>
+      <key>short_id</key>
+      <value>s</value>
     </param>
     <param>
-      <key>gain20</key>
-      <value>0</value>
+      <key>type</key>
+      <value>eng_float</value>
     </param>
     <param>
-      <key>ant20</key>
-      <value></value>
+      <key>value</key>
+      <value>500e3</value>
     </param>
+  </block>
+  <block>
+    <key>parameter</key>
     <param>
-      <key>bw20</key>
-      <value>0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>center_freq21</key>
-      <value>0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>gain21</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>ant21</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(983, 0)</value>
     </param>
     <param>
-      <key>bw21</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq22</key>
-      <value>0</value>
+      <key>id</key>
+      <value>tx_gain</value>
     </param>
     <param>
-      <key>gain22</key>
-      <value>0</value>
+      <key>label</key>
+      <value>Default TX Gain</value>
     </param>
     <param>
-      <key>ant22</key>
+      <key>short_id</key>
       <value></value>
     </param>
     <param>
-      <key>bw22</key>
-      <value>0</value>
+      <key>type</key>
+      <value>eng_float</value>
     </param>
     <param>
-      <key>center_freq23</key>
+      <key>value</key>
       <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>uhd_usrp_sink</key>
     <param>
-      <key>gain23</key>
-      <value>0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>ant23</key>
+      <key>ant0</key>
       <value></value>
     </param>
     <param>
-      <key>bw23</key>
+      <key>bw0</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq24</key>
-      <value>0</value>
+      <key>center_freq0</key>
+      <value>tun_freq</value>
     </param>
     <param>
-      <key>gain24</key>
-      <value>0</value>
+      <key>norm_gain0</key>
+      <value>False</value>
     </param>
     <param>
-      <key>ant24</key>
+      <key>gain0</key>
+      <value>tun_rx_gain</value>
+    </param>
+    <param>
+      <key>ant10</key>
       <value></value>
     </param>
     <param>
-      <key>bw24</key>
+      <key>bw10</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq10</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq25</key>
-      <value>0</value>
+      <key>norm_gain10</key>
+      <value>False</value>
     </param>
     <param>
-      <key>gain25</key>
+      <key>gain10</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant25</key>
+      <key>ant11</key>
       <value></value>
     </param>
     <param>
-      <key>bw25</key>
+      <key>bw11</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq26</key>
+      <key>center_freq11</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain26</key>
+      <key>norm_gain11</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain11</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant26</key>
+      <key>ant12</key>
       <value></value>
     </param>
     <param>
-      <key>bw26</key>
+      <key>bw12</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq27</key>
+      <key>center_freq12</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain27</key>
+      <key>norm_gain12</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain12</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant27</key>
+      <key>ant13</key>
       <value></value>
     </param>
     <param>
-      <key>bw27</key>
+      <key>bw13</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq28</key>
+      <key>center_freq13</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain28</key>
+      <key>norm_gain13</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain13</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant28</key>
+      <key>ant14</key>
       <value></value>
     </param>
     <param>
-      <key>bw28</key>
+      <key>bw14</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq29</key>
+      <key>center_freq14</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain29</key>
+      <key>norm_gain14</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain14</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant29</key>
+      <key>ant15</key>
       <value></value>
     </param>
     <param>
-      <key>bw29</key>
+      <key>bw15</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq30</key>
+      <key>center_freq15</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain30</key>
+      <key>norm_gain15</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain15</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant30</key>
+      <key>ant16</key>
       <value></value>
     </param>
     <param>
-      <key>bw30</key>
+      <key>bw16</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq31</key>
+      <key>center_freq16</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain31</key>
+      <key>norm_gain16</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain16</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant31</key>
+      <key>ant17</key>
       <value></value>
     </param>
     <param>
-      <key>bw31</key>
+      <key>bw17</key>
       <value>0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>center_freq17</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>norm_gain17</key>
+      <value>False</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>gain17</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>ant18</key>
+      <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(813, 281)</value>
+      <key>bw18</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>center_freq18</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>analog_noise_source_x</key>
     <param>
-      <key>id</key>
-      <value>analog_noise_source_x_0</value>
+      <key>norm_gain18</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>gain18</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>ant19</key>
+      <value></value>
     </param>
     <param>
-      <key>noise_type</key>
-      <value>analog.GR_GAUSSIAN</value>
+      <key>bw19</key>
+      <value>0</value>
     </param>
     <param>
-      <key>amp</key>
-      <value>noise_ampl</value>
+      <key>center_freq19</key>
+      <value>0</value>
     </param>
     <param>
-      <key>seed</key>
-      <value>-42</value>
+      <key>norm_gain19</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>gain19</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>ant1</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>bw1</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>center_freq1</key>
       <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(551, 324)</value>
+      <key>norm_gain1</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>gain1</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>analog_sig_source_x</key>
     <param>
-      <key>id</key>
-      <value>analog_sig_source_x_0</value>
+      <key>ant20</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>bw20</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>center_freq20</key>
+      <value>0</value>
     </param>
     <param>
-      <key>samp_rate</key>
-      <value>samp_rate</value>
+      <key>norm_gain20</key>
+      <value>False</value>
     </param>
     <param>
-      <key>waveform</key>
-      <value>analog.GR_COS_WAVE</value>
+      <key>gain20</key>
+      <value>0</value>
     </param>
     <param>
-      <key>freq</key>
-      <value>tone1</value>
+      <key>ant21</key>
+      <value></value>
     </param>
     <param>
-      <key>amp</key>
-      <value>tone_ampl</value>
+      <key>bw21</key>
+      <value>0</value>
     </param>
     <param>
-      <key>offset</key>
+      <key>center_freq21</key>
       <value>0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>norm_gain21</key>
+      <value>False</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>gain21</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant22</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>bw22</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>center_freq22</key>
       <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(541, 98)</value>
+      <key>norm_gain22</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>gain22</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>analog_sig_source_x</key>
     <param>
-      <key>id</key>
-      <value>analog_sig_source_x_1</value>
+      <key>ant23</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>bw23</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>center_freq23</key>
+      <value>0</value>
     </param>
     <param>
-      <key>samp_rate</key>
-      <value>samp_rate</value>
+      <key>norm_gain23</key>
+      <value>False</value>
     </param>
     <param>
-      <key>waveform</key>
-      <value>analog.GR_COS_WAVE</value>
+      <key>gain23</key>
+      <value>0</value>
     </param>
     <param>
-      <key>freq</key>
-      <value>tone2</value>
+      <key>ant24</key>
+      <value></value>
     </param>
     <param>
-      <key>amp</key>
-      <value>tone_ampl</value>
+      <key>bw24</key>
+      <value>0</value>
     </param>
     <param>
-      <key>offset</key>
+      <key>center_freq24</key>
       <value>0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>norm_gain24</key>
+      <value>False</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>gain24</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant25</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>bw25</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>center_freq25</key>
       <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(542, 209)</value>
+      <key>norm_gain25</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>gain25</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_add_xx</key>
-    <param>
-      <key>id</key>
-      <value>blocks_add_xx</value>
-    </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>ant26</key>
+      <value></value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>bw26</key>
+      <value>0</value>
     </param>
     <param>
-      <key>num_inputs</key>
-      <value>3</value>
+      <key>center_freq26</key>
+      <value>0</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>norm_gain26</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>gain26</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>ant27</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>bw27</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>center_freq27</key>
       <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(806, 134)</value>
+      <key>norm_gain27</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>gain27</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_freq_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_freq_sink_x_0</value>
+      <key>ant28</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>bw28</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>center_freq28</key>
+      <value>0</value>
     </param>
     <param>
-      <key>name</key>
-      <value>""</value>
+      <key>norm_gain28</key>
+      <value>False</value>
     </param>
     <param>
-      <key>fftsize</key>
-      <value>1024</value>
+      <key>gain28</key>
+      <value>0</value>
     </param>
     <param>
-      <key>wintype</key>
-      <value>firdes.WIN_BLACKMAN_hARRIS</value>
+      <key>ant29</key>
+      <value></value>
     </param>
     <param>
-      <key>fc</key>
+      <key>bw29</key>
       <value>0</value>
     </param>
     <param>
-      <key>bw</key>
-      <value>samp_rate</value>
+      <key>center_freq29</key>
+      <value>0</value>
     </param>
     <param>
-      <key>autoscale</key>
+      <key>norm_gain29</key>
       <value>False</value>
     </param>
     <param>
-      <key>average</key>
-      <value>1.0</value>
+      <key>gain29</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-140</value>
+      <key>ant2</key>
+      <value></value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>10</value>
+      <key>bw2</key>
+      <value>0</value>
     </param>
     <param>
-      <key>nconnections</key>
-      <value>1</value>
+      <key>center_freq2</key>
+      <value>0</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>norm_gain2</key>
+      <value>False</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>2,0,1,4</value>
+      <key>gain2</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label1</key>
+      <key>ant30</key>
       <value></value>
     </param>
     <param>
-      <key>width1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>bw30</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>center_freq30</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label2</key>
-      <value></value>
+      <key>norm_gain30</key>
+      <value>False</value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>gain30</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>ant31</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>bw31</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label3</key>
-      <value></value>
+      <key>center_freq31</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>norm_gain31</key>
+      <value>False</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>gain31</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>ant3</key>
+      <value></value>
     </param>
     <param>
-      <key>label4</key>
-      <value></value>
+      <key>bw3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>center_freq3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>norm_gain3</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>gain3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label5</key>
+      <key>ant4</key>
       <value></value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>bw4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>center_freq4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>norm_gain4</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label6</key>
-      <value></value>
+      <key>gain4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>ant5</key>
+      <value></value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
+      <key>bw5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>center_freq5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label7</key>
-      <value></value>
+      <key>norm_gain5</key>
+      <value>False</value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>gain5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>ant6</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>bw6</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label8</key>
-      <value></value>
+      <key>center_freq6</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>norm_gain6</key>
+      <value>False</value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>gain6</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>ant7</key>
+      <value></value>
     </param>
     <param>
-      <key>label9</key>
-      <value></value>
+      <key>bw7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>center_freq7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>norm_gain7</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>gain7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label10</key>
+      <key>ant8</key>
       <value></value>
     </param>
     <param>
-      <key>width10</key>
-      <value>1</value>
+      <key>bw8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"dark blue"</value>
+      <key>center_freq8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>norm_gain8</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>gain8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>ant9</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1086, 281)</value>
+      <key>bw9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>center_freq9</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>uhd_usrp_sink</key>
     <param>
-      <key>id</key>
-      <value>uhd_usrp_sink_0</value>
+      <key>norm_gain9</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>gain9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>fc32</value>
+      <key>clock_rate</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>otw</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>stream_args</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>stream_chans</key>
-      <value>[]</value>
-    </param>
-    <param>
       <key>dev_addr</key>
       <value>address0</value>
     </param>
@@ -1514,23 +2001,31 @@
       <value>""</value>
     </param>
     <param>
-      <key>sync</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(949, 140)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>clock_rate</key>
-      <value>0.0</value>
+      <key>id</key>
+      <value>uhd_usrp_sink_0</value>
     </param>
     <param>
-      <key>num_mboards</key>
-      <value>1</value>
+      <key>type</key>
+      <value>fc32</value>
     </param>
     <param>
-      <key>clock_source0</key>
+      <key>len_tag_name</key>
       <value></value>
     </param>
     <param>
-      <key>time_source0</key>
+      <key>clock_source0</key>
       <value></value>
     </param>
     <param>
@@ -1538,11 +2033,11 @@
       <value>A:0</value>
     </param>
     <param>
-      <key>clock_source1</key>
+      <key>time_source0</key>
       <value></value>
     </param>
     <param>
-      <key>time_source1</key>
+      <key>clock_source1</key>
       <value></value>
     </param>
     <param>
@@ -1550,11 +2045,11 @@
       <value></value>
     </param>
     <param>
-      <key>clock_source2</key>
+      <key>time_source1</key>
       <value></value>
     </param>
     <param>
-      <key>time_source2</key>
+      <key>clock_source2</key>
       <value></value>
     </param>
     <param>
@@ -1562,11 +2057,11 @@
       <value></value>
     </param>
     <param>
-      <key>clock_source3</key>
+      <key>time_source2</key>
       <value></value>
     </param>
     <param>
-      <key>time_source3</key>
+      <key>clock_source3</key>
       <value></value>
     </param>
     <param>
@@ -1574,11 +2069,11 @@
       <value></value>
     </param>
     <param>
-      <key>clock_source4</key>
+      <key>time_source3</key>
       <value></value>
     </param>
     <param>
-      <key>time_source4</key>
+      <key>clock_source4</key>
       <value></value>
     </param>
     <param>
@@ -1586,11 +2081,11 @@
       <value></value>
     </param>
     <param>
-      <key>clock_source5</key>
+      <key>time_source4</key>
       <value></value>
     </param>
     <param>
-      <key>time_source5</key>
+      <key>clock_source5</key>
       <value></value>
     </param>
     <param>
@@ -1598,11 +2093,11 @@
       <value></value>
     </param>
     <param>
-      <key>clock_source6</key>
+      <key>time_source5</key>
       <value></value>
     </param>
     <param>
-      <key>time_source6</key>
+      <key>clock_source6</key>
       <value></value>
     </param>
     <param>
@@ -1610,11 +2105,11 @@
       <value></value>
     </param>
     <param>
-      <key>clock_source7</key>
+      <key>time_source6</key>
       <value></value>
     </param>
     <param>
-      <key>time_source7</key>
+      <key>clock_source7</key>
       <value></value>
     </param>
     <param>
@@ -1622,187 +2117,90 @@
       <value></value>
     </param>
     <param>
-      <key>nchan</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>samp_rate</key>
-      <value>samp_rate</value>
-    </param>
-    <param>
-      <key>center_freq0</key>
-      <value>tun_freq</value>
-    </param>
-    <param>
-      <key>gain0</key>
-      <value>tun_rx_gain</value>
-    </param>
-    <param>
-      <key>ant0</key>
-      <value></value>
-    </param>
-    <param>
-      <key>bw0</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>center_freq1</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>gain1</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>ant1</key>
+      <key>time_source7</key>
       <value></value>
     </param>
     <param>
-      <key>bw1</key>
-      <value>0</value>
+      <key>nchan</key>
+      <value>1</value>
     </param>
     <param>
-      <key>center_freq2</key>
-      <value>0</value>
+      <key>num_mboards</key>
+      <value>1</value>
     </param>
     <param>
-      <key>gain2</key>
-      <value>0</value>
+      <key>samp_rate</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>ant2</key>
+      <key>stream_args</key>
       <value></value>
     </param>
     <param>
-      <key>bw2</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>center_freq3</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>gain3</key>
-      <value>0</value>
+      <key>stream_chans</key>
+      <value>[]</value>
     </param>
     <param>
-      <key>ant3</key>
+      <key>sync</key>
       <value></value>
     </param>
     <param>
-      <key>bw3</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>center_freq4</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>gain4</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>ant4</key>
+      <key>otw</key>
       <value></value>
     </param>
+  </block>
+  <block>
+    <key>uhd_usrp_source</key>
     <param>
-      <key>bw4</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>center_freq5</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>gain5</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>ant5</key>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>bw5</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>center_freq6</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>gain6</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>ant6</key>
+      <key>ant0</key>
       <value></value>
     </param>
     <param>
-      <key>bw6</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>center_freq7</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>gain7</key>
+      <key>bw0</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant7</key>
-      <value></value>
-    </param>
-    <param>
-      <key>bw7</key>
-      <value>0</value>
+      <key>center_freq0</key>
+      <value>tun_freq</value>
     </param>
     <param>
-      <key>center_freq8</key>
-      <value>0</value>
+      <key>norm_gain0</key>
+      <value>False</value>
     </param>
     <param>
-      <key>gain8</key>
-      <value>0</value>
+      <key>gain0</key>
+      <value>tun_rx_gain</value>
     </param>
     <param>
-      <key>ant8</key>
+      <key>ant10</key>
       <value></value>
     </param>
     <param>
-      <key>bw8</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>center_freq9</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>gain9</key>
+      <key>bw10</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant9</key>
-      <value></value>
-    </param>
-    <param>
-      <key>bw9</key>
+      <key>center_freq10</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq10</key>
-      <value>0</value>
+      <key>norm_gain10</key>
+      <value>False</value>
     </param>
     <param>
       <key>gain10</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant10</key>
+      <key>ant11</key>
       <value></value>
     </param>
     <param>
-      <key>bw10</key>
+      <key>bw11</key>
       <value>0</value>
     </param>
     <param>
@@ -1810,15 +2208,19 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain11</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain11</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant11</key>
+      <key>ant12</key>
       <value></value>
     </param>
     <param>
-      <key>bw11</key>
+      <key>bw12</key>
       <value>0</value>
     </param>
     <param>
@@ -1826,15 +2228,19 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain12</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain12</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant12</key>
+      <key>ant13</key>
       <value></value>
     </param>
     <param>
-      <key>bw12</key>
+      <key>bw13</key>
       <value>0</value>
     </param>
     <param>
@@ -1842,15 +2248,19 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain13</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain13</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant13</key>
+      <key>ant14</key>
       <value></value>
     </param>
     <param>
-      <key>bw13</key>
+      <key>bw14</key>
       <value>0</value>
     </param>
     <param>
@@ -1858,15 +2268,19 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain14</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain14</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant14</key>
+      <key>ant15</key>
       <value></value>
     </param>
     <param>
-      <key>bw14</key>
+      <key>bw15</key>
       <value>0</value>
     </param>
     <param>
@@ -1874,15 +2288,19 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain15</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain15</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant15</key>
+      <key>ant16</key>
       <value></value>
     </param>
     <param>
-      <key>bw15</key>
+      <key>bw16</key>
       <value>0</value>
     </param>
     <param>
@@ -1890,15 +2308,19 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain16</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain16</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant16</key>
+      <key>ant17</key>
       <value></value>
     </param>
     <param>
-      <key>bw16</key>
+      <key>bw17</key>
       <value>0</value>
     </param>
     <param>
@@ -1906,15 +2328,19 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain17</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain17</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant17</key>
+      <key>ant18</key>
       <value></value>
     </param>
     <param>
-      <key>bw17</key>
+      <key>bw18</key>
       <value>0</value>
     </param>
     <param>
@@ -1922,15 +2348,19 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain18</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain18</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant18</key>
+      <key>ant19</key>
       <value></value>
     </param>
     <param>
-      <key>bw18</key>
+      <key>bw19</key>
       <value>0</value>
     </param>
     <param>
@@ -1938,23 +2368,31 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain19</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain19</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant19</key>
+      <key>ant1</key>
       <value></value>
     </param>
     <param>
-      <key>bw19</key>
+      <key>bw1</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq20</key>
+      <key>center_freq1</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain20</key>
+      <key>norm_gain1</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain1</key>
       <value>0</value>
     </param>
     <param>
@@ -1966,11 +2404,15 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq21</key>
+      <key>center_freq20</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain21</key>
+      <key>norm_gain20</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain20</key>
       <value>0</value>
     </param>
     <param>
@@ -1982,11 +2424,15 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq22</key>
+      <key>center_freq21</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain22</key>
+      <key>norm_gain21</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain21</key>
       <value>0</value>
     </param>
     <param>
@@ -1998,11 +2444,15 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq23</key>
+      <key>center_freq22</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain23</key>
+      <key>norm_gain22</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain22</key>
       <value>0</value>
     </param>
     <param>
@@ -2014,11 +2464,15 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq24</key>
+      <key>center_freq23</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain24</key>
+      <key>norm_gain23</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain23</key>
       <value>0</value>
     </param>
     <param>
@@ -2030,11 +2484,15 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq25</key>
+      <key>center_freq24</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain25</key>
+      <key>norm_gain24</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain24</key>
       <value>0</value>
     </param>
     <param>
@@ -2046,11 +2504,15 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq26</key>
+      <key>center_freq25</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain26</key>
+      <key>norm_gain25</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain25</key>
       <value>0</value>
     </param>
     <param>
@@ -2062,11 +2524,15 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq27</key>
+      <key>center_freq26</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain27</key>
+      <key>norm_gain26</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain26</key>
       <value>0</value>
     </param>
     <param>
@@ -2078,11 +2544,15 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq28</key>
+      <key>center_freq27</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain28</key>
+      <key>norm_gain27</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain27</key>
       <value>0</value>
     </param>
     <param>
@@ -2094,11 +2564,15 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq29</key>
+      <key>center_freq28</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain29</key>
+      <key>norm_gain28</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain28</key>
       <value>0</value>
     </param>
     <param>
@@ -2110,476 +2584,395 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq30</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>gain30</key>
+      <key>center_freq29</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant30</key>
-      <value></value>
+      <key>norm_gain29</key>
+      <value>False</value>
     </param>
     <param>
-      <key>bw30</key>
+      <key>gain29</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq31</key>
-      <value>0</value>
+      <key>ant2</key>
+      <value></value>
     </param>
     <param>
-      <key>gain31</key>
+      <key>bw2</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant31</key>
-      <value></value>
-    </param>
-    <param>
-      <key>bw31</key>
+      <key>center_freq2</key>
       <value>0</value>
     </param>
     <param>
-      <key>len_tag_name</key>
-      <value></value>
+      <key>norm_gain2</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>gain2</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>ant30</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(949, 140)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
+      <key>bw30</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
-    <param>
-      <key>id</key>
-      <value>tun_freq</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>label</key>
-      <value>UHD Freq (Hz)</value>
-    </param>
     <param>
-      <key>value</key>
-      <value>2.45e9</value>
+      <key>center_freq30</key>
+      <value>0</value>
     </param>
     <param>
-      <key>start</key>
-      <value>2.4e9</value>
+      <key>norm_gain30</key>
+      <value>False</value>
     </param>
     <param>
-      <key>stop</key>
-      <value>2.5e9</value>
+      <key>gain30</key>
+      <value>0</value>
     </param>
     <param>
-      <key>step</key>
-      <value>1</value>
+      <key>ant31</key>
+      <value></value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>bw31</key>
+      <value>0</value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>center_freq31</key>
+      <value>0</value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>norm_gain31</key>
+      <value>False</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>3,0,1,4</value>
+      <key>gain31</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>ant3</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(80, 431)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
+      <key>bw3</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
-    <param>
-      <key>id</key>
-      <value>tone1</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>label</key>
-      <value>Tone 1</value>
-    </param>
     <param>
-      <key>value</key>
-      <value>samp_rate/4</value>
+      <key>center_freq3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>start</key>
-      <value>-samp_rate/2</value>
+      <key>norm_gain3</key>
+      <value>False</value>
     </param>
     <param>
-      <key>stop</key>
-      <value>samp_rate/2</value>
+      <key>gain3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>step</key>
-      <value>1</value>
+      <key>ant4</key>
+      <value></value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>bw4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>center_freq4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>norm_gain4</key>
+      <value>False</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>0,0,1,2</value>
+      <key>gain4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>ant5</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1, 131)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
+      <key>bw5</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
-    <param>
-      <key>id</key>
-      <value>noise_ampl</value>
-    </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>label</key>
-      <value>Noise Amplitude</value>
+      <key>center_freq5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>value</key>
-      <value>0.1</value>
+      <key>norm_gain5</key>
+      <value>False</value>
     </param>
     <param>
-      <key>start</key>
+      <key>gain5</key>
       <value>0</value>
     </param>
     <param>
-      <key>stop</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>step</key>
-      <value>.001</value>
+      <key>ant6</key>
+      <value></value>
     </param>
-    <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+    <param>
+      <key>bw6</key>
+      <value>0</value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>center_freq6</key>
+      <value>0</value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>norm_gain6</key>
+      <value>False</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>1,0,1,2</value>
+      <key>gain6</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>ant7</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(0, 283)</value>
+      <key>bw7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>center_freq7</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>tun_tx_gain</value>
+      <key>norm_gain7</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>gain7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label</key>
-      <value>UHD Tx Gain</value>
+      <key>ant8</key>
+      <value></value>
     </param>
     <param>
-      <key>value</key>
+      <key>bw8</key>
       <value>0</value>
     </param>
     <param>
-      <key>start</key>
+      <key>center_freq8</key>
       <value>0</value>
     </param>
     <param>
-      <key>stop</key>
-      <value>20</value>
+      <key>norm_gain8</key>
+      <value>False</value>
     </param>
     <param>
-      <key>step</key>
-      <value>1</value>
+      <key>gain8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>ant9</key>
+      <value></value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>bw9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>center_freq9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>4,0,1,2</value>
+      <key>norm_gain9</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>gain9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(-1, 573)</value>
+      <key>clock_rate</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>comment</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>tone2</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>dev_addr</key>
+      <value>address1</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Tone 2</value>
+      <key>dev_args</key>
+      <value>""</value>
     </param>
     <param>
-      <key>value</key>
-      <value>samp_rate/5</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>start</key>
-      <value>-samp_rate/2</value>
+      <key>_coordinate</key>
+      <value>(813, 281)</value>
     </param>
     <param>
-      <key>stop</key>
-      <value>samp_rate/2</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>step</key>
-      <value>1</value>
+      <key>id</key>
+      <value>uhd_usrp_source_0</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>clock_source0</key>
+      <value></value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>sd_spec0</key>
+      <value>B:0</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>0,2,1,2</value>
+      <key>time_source0</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
+      <key>clock_source1</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(126, 132)</value>
+      <key>sd_spec1</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>time_source1</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>tone_ampl</value>
+      <key>clock_source2</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>sd_spec2</key>
+      <value></value>
     </param>
     <param>
-      <key>label</key>
-      <value>Tone Amplitude</value>
+      <key>time_source2</key>
+      <value></value>
     </param>
     <param>
-      <key>value</key>
-      <value>0.15</value>
+      <key>clock_source3</key>
+      <value></value>
     </param>
     <param>
-      <key>start</key>
-      <value>0</value>
+      <key>sd_spec3</key>
+      <value></value>
     </param>
     <param>
-      <key>stop</key>
-      <value>1</value>
+      <key>time_source3</key>
+      <value></value>
     </param>
     <param>
-      <key>step</key>
-      <value>.001</value>
+      <key>clock_source4</key>
+      <value></value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>sd_spec4</key>
+      <value></value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>time_source4</key>
+      <value></value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>clock_source5</key>
+      <value></value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>1,2,1,2</value>
+      <key>sd_spec5</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
+      <key>time_source5</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(152, 286)</value>
+      <key>clock_source6</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>sd_spec6</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>tun_rx_gain</value>
+      <key>time_source6</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>clock_source7</key>
+      <value></value>
     </param>
     <param>
-      <key>label</key>
-      <value>UHD Rx Gain</value>
+      <key>sd_spec7</key>
+      <value></value>
     </param>
     <param>
-      <key>value</key>
-      <value>0</value>
+      <key>time_source7</key>
+      <value></value>
     </param>
     <param>
-      <key>start</key>
+      <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>stop</key>
-      <value>20</value>
+      <key>nchan</key>
+      <value>1</value>
     </param>
     <param>
-      <key>step</key>
+      <key>num_mboards</key>
       <value>1</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>type</key>
+      <value>fc32</value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>samp_rate</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>stream_args</key>
+      <value></value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>4,2,1,2</value>
+      <key>stream_chans</key>
+      <value>[]</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>sync</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(120, 571)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>otw</key>
+      <value></value>
     </param>
   </block>
   <connection>
-    <source_block_id>uhd_usrp_source_0</source_block_id>
-    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
+    <source_block_id>analog_noise_source_x_0</source_block_id>
+    <sink_block_id>blocks_add_xx</sink_block_id>
     <source_key>0</source_key>
-    <sink_key>0</sink_key>
+    <sink_key>2</sink_key>
   </connection>
   <connection>
     <source_block_id>analog_sig_source_x_0</source_block_id>
@@ -2594,14 +2987,14 @@
     <sink_key>1</sink_key>
   </connection>
   <connection>
-    <source_block_id>analog_noise_source_x_0</source_block_id>
-    <sink_block_id>blocks_add_xx</sink_block_id>
+    <source_block_id>blocks_add_xx</source_block_id>
+    <sink_block_id>uhd_usrp_sink_0</sink_block_id>
     <source_key>0</source_key>
-    <sink_key>2</sink_key>
+    <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_add_xx</source_block_id>
-    <sink_block_id>uhd_usrp_sink_0</sink_block_id>
+    <source_block_id>uhd_usrp_source_0</source_block_id>
+    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
diff --git a/gr-uhd/examples/grc/uhd_tx_dpsk.grc 
b/gr-uhd/examples/grc/uhd_tx_dpsk.grc
index 815d87b..25d9998 100644
--- a/gr-uhd/examples/grc/uhd_tx_dpsk.grc
+++ b/gr-uhd/examples/grc/uhd_tx_dpsk.grc
@@ -1,22 +1,27 @@
-<?xml version='1.0' encoding='ASCII'?>
+<?xml version='1.0' encoding='utf-8'?>
+<?grc format='1' created='3.7.8rc1'?>
 <flow_graph>
   <timestamp>Sat Jul 12 14:07:03 2014</timestamp>
   <block>
     <key>options</key>
     <param>
-      <key>id</key>
-      <value>uhd_tx_dpsk</value>
+      <key>author</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>title</key>
-      <value>UHD TX DPSK</value>
+      <key>window_size</key>
+      <value>1280, 1024</value>
     </param>
     <param>
-      <key>author</key>
+      <key>category</key>
+      <value>Custom</value>
+    </param>
+    <param>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
@@ -24,24 +29,24 @@
       <value></value>
     </param>
     <param>
-      <key>window_size</key>
-      <value>1280, 1024</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>generate_options</key>
-      <value>qt_gui</value>
+      <key>_coordinate</key>
+      <value>(-1, 0)</value>
     </param>
     <param>
-      <key>category</key>
-      <value>Custom</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>run_options</key>
-      <value>prompt</value>
+      <key>generate_options</key>
+      <value>qt_gui</value>
     </param>
     <param>
-      <key>run</key>
-      <value>True</value>
+      <key>id</key>
+      <value>uhd_tx_dpsk</value>
     </param>
     <param>
       <key>max_nouts</key>
@@ -52,410 +57,399 @@
       <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>run_options</key>
+      <value>prompt</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(-1, 0)</value>
+      <key>run</key>
+      <value>True</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>thread_safe_setters</key>
+      <value></value>
+    </param>
+    <param>
+      <key>title</key>
+      <value>UHD TX DPSK</value>
     </param>
   </block>
   <block>
-    <key>variable</key>
+    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>samps_per_sym</value>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>0.1</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>value</key>
-      <value>4</value>
+      <key>_coordinate</key>
+      <value>(-1, 307)</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>gui_hint</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(-1, 84)</value>
-    </param>
-    <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>parameter</key>
     <param>
       <key>id</key>
-      <value>gain</value>
+      <value>ampl</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label</key>
+      <value>Amplitude</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Default Gain</value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>value</key>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
+    </param>
+    <param>
+      <key>start</key>
       <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>eng_float</value>
+      <key>step</key>
+      <value>0.01</value>
     </param>
     <param>
-      <key>short_id</key>
-      <value>g</value>
+      <key>stop</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>rangeType</key>
+      <value>float</value>
+    </param>
+    <param>
+      <key>widget</key>
+      <value>counter_slider</value>
+    </param>
+  </block>
+  <block>
+    <key>variable</key>
+    <param>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(589, 0)</value>
+      <value>(-1, 84)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>parameter</key>
     <param>
       <key>id</key>
-      <value>freq</value>
+      <value>samps_per_sym</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>value</key>
+      <value>4</value>
     </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
     <param>
-      <key>label</key>
-      <value>Default Frequency</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>value</key>
       <value>2.45e9</value>
     </param>
     <param>
-      <key>type</key>
-      <value>eng_float</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>short_id</key>
-      <value>f</value>
+      <key>_coordinate</key>
+      <value>(0, 436)</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>gui_hint</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(433, 1)</value>
-    </param>
-    <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>parameter</key>
     <param>
       <key>id</key>
-      <value>samp_rate</value>
+      <value>tun_freq</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label</key>
+      <value>UHD Freq (Hz)</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Sample Rate</value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>value</key>
-      <value>1e6</value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>type</key>
-      <value>eng_float</value>
+      <key>start</key>
+      <value>2.4e9</value>
     </param>
     <param>
-      <key>short_id</key>
-      <value>s</value>
+      <key>step</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>stop</key>
+      <value>2.5e9</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(304, 0)</value>
+      <key>rangeType</key>
+      <value>float</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
   </block>
   <block>
-    <key>parameter</key>
-    <param>
-      <key>id</key>
-      <value>address</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
+    <key>variable_qtgui_range</key>
     <param>
-      <key>label</key>
-      <value>IP Address</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>value</key>
-      <value>addr=192.168.10.2</value>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>string</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>short_id</key>
-      <value>a</value>
+      <key>_coordinate</key>
+      <value>(137, 435)</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>gui_hint</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(147, 0)</value>
-    </param>
-    <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
     <param>
       <key>id</key>
-      <value>ampl</value>
+      <value>tun_gain</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label</key>
+      <value>UHD Tx Gain</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Amplitude</value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>value</key>
-      <value>0.1</value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
       <key>start</key>
       <value>0</value>
     </param>
     <param>
-      <key>stop</key>
+      <key>step</key>
       <value>1</value>
     </param>
     <param>
-      <key>step</key>
-      <value>0.01</value>
+      <key>stop</key>
+      <value>20</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>rangeType</key>
+      <value>float</value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
+  </block>
+  <block>
+    <key>parameter</key>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>gui_hint</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(-1, 307)</value>
+      <value>(147, 0)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
     <param>
       <key>id</key>
-      <value>tun_freq</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>address</value>
     </param>
     <param>
       <key>label</key>
-      <value>UHD Freq (Hz)</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>2.45e9</value>
-    </param>
-    <param>
-      <key>start</key>
-      <value>2.4e9</value>
+      <value>IP Address</value>
     </param>
     <param>
-      <key>stop</key>
-      <value>2.5e9</value>
+      <key>short_id</key>
+      <value>a</value>
     </param>
     <param>
-      <key>step</key>
-      <value>1</value>
+      <key>type</key>
+      <value>string</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>value</key>
+      <value>addr=192.168.10.2</value>
     </param>
+  </block>
+  <block>
+    <key>analog_random_source_x</key>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>gui_hint</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(0, 436)</value>
+      <value>(-1, 171)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
     <param>
       <key>id</key>
-      <value>tun_gain</value>
+      <value>analog_random_source_x_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label</key>
-      <value>UHD Tx Gain</value>
+      <key>max</key>
+      <value>2**8</value>
     </param>
     <param>
-      <key>value</key>
+      <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>start</key>
+      <key>min</key>
       <value>0</value>
     </param>
     <param>
-      <key>stop</key>
-      <value>20</value>
+      <key>num_samps</key>
+      <value>1000</value>
     </param>
     <param>
-      <key>step</key>
-      <value>1</value>
+      <key>type</key>
+      <value>byte</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>repeat</key>
+      <value>True</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_multiply_const_vxx</key>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value></value>
+      <key>const</key>
+      <value>ampl</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(137, 435)</value>
+      <value>(388, 193)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>analog_random_source_x</key>
     <param>
       <key>id</key>
-      <value>analog_random_source_x_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>blocks_multiply_const_vxx_0</value>
     </param>
     <param>
       <key>type</key>
-      <value>byte</value>
+      <value>complex</value>
     </param>
     <param>
-      <key>min</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>max</key>
-      <value>2**8</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>num_samps</key>
-      <value>1000</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>digital_dxpsk_mod</key>
     <param>
-      <key>repeat</key>
-      <value>True</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
@@ -463,389 +457,502 @@
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>excess_bw</key>
+      <value>0.35</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(-1, 171)</value>
+      <value>(190, 171)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_dxpsk_mod</key>
+    <param>
+      <key>mod_code</key>
+      <value>"gray"</value>
+    </param>
     <param>
       <key>id</key>
       <value>digital_dxpsk_mod_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>log</key>
+      <value>False</value>
     </param>
     <param>
-      <key>type</key>
-      <value>dqpsk</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>samples_per_symbol</key>
-      <value>samps_per_sym</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>excess_bw</key>
-      <value>0.35</value>
+      <key>samples_per_symbol</key>
+      <value>samps_per_sym</value>
     </param>
     <param>
-      <key>mod_code</key>
-      <value>"gray"</value>
+      <key>type</key>
+      <value>dqpsk</value>
     </param>
     <param>
       <key>verbose</key>
       <value>False</value>
     </param>
-    <param>
-      <key>log</key>
-      <value>False</value>
-    </param>
+  </block>
+  <block>
+    <key>parameter</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(190, 171)</value>
+      <value>(433, 1)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>uhd_usrp_sink</key>
     <param>
       <key>id</key>
-      <value>uhd_usrp_sink_0</value>
+      <value>freq</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label</key>
+      <value>Default Frequency</value>
+    </param>
+    <param>
+      <key>short_id</key>
+      <value>f</value>
     </param>
     <param>
       <key>type</key>
-      <value>fc32</value>
+      <value>eng_float</value>
     </param>
     <param>
-      <key>otw</key>
+      <key>value</key>
+      <value>2.45e9</value>
+    </param>
+  </block>
+  <block>
+    <key>parameter</key>
+    <param>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>stream_args</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>stream_chans</key>
-      <value>[]</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>dev_addr</key>
-      <value>address</value>
+      <key>_coordinate</key>
+      <value>(589, 0)</value>
     </param>
     <param>
-      <key>dev_args</key>
-      <value>""</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>sync</key>
-      <value></value>
+      <key>id</key>
+      <value>gain</value>
     </param>
     <param>
-      <key>clock_rate</key>
-      <value>0.0</value>
+      <key>label</key>
+      <value>Default Gain</value>
     </param>
     <param>
-      <key>num_mboards</key>
-      <value>1</value>
+      <key>short_id</key>
+      <value>g</value>
     </param>
     <param>
-      <key>clock_source0</key>
-      <value></value>
+      <key>type</key>
+      <value>eng_float</value>
     </param>
     <param>
-      <key>time_source0</key>
-      <value></value>
+      <key>value</key>
+      <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_freq_sink_x</key>
     <param>
-      <key>sd_spec0</key>
-      <value></value>
+      <key>autoscale</key>
+      <value>True</value>
     </param>
     <param>
-      <key>clock_source1</key>
-      <value></value>
+      <key>average</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>time_source1</key>
-      <value></value>
+      <key>bw</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>sd_spec1</key>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>clock_source2</key>
-      <value></value>
+      <key>fc</key>
+      <value>tun_freq</value>
     </param>
     <param>
-      <key>time_source2</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>sd_spec2</key>
-      <value></value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
     <param>
-      <key>clock_source3</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>time_source3</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>sd_spec3</key>
-      <value></value>
+      <key>fftsize</key>
+      <value>1024</value>
     </param>
     <param>
-      <key>clock_source4</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(619, 285)</value>
     </param>
     <param>
-      <key>time_source4</key>
+      <key>gui_hint</key>
       <value></value>
     </param>
     <param>
-      <key>sd_spec4</key>
-      <value></value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>clock_source5</key>
-      <value></value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>time_source5</key>
-      <value></value>
+      <key>id</key>
+      <value>qtgui_freq_sink_x_0</value>
     </param>
     <param>
-      <key>sd_spec5</key>
-      <value></value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>clock_source6</key>
-      <value></value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>time_source6</key>
-      <value></value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>sd_spec6</key>
+      <key>label1</key>
       <value></value>
     </param>
     <param>
-      <key>clock_source7</key>
-      <value></value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>time_source7</key>
-      <value></value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>sd_spec7</key>
+      <key>color10</key>
+      <value>"dark blue"</value>
+    </param>
+    <param>
+      <key>label10</key>
       <value></value>
     </param>
     <param>
-      <key>nchan</key>
+      <key>width10</key>
       <value>1</value>
     </param>
     <param>
-      <key>samp_rate</key>
-      <value>samp_rate</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>center_freq0</key>
-      <value>tun_freq</value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>gain0</key>
-      <value>tun_gain</value>
+      <key>label2</key>
+      <value></value>
     </param>
     <param>
-      <key>ant0</key>
+      <key>width2</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha3</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color3</key>
+      <value>"green"</value>
+    </param>
+    <param>
+      <key>label3</key>
       <value></value>
     </param>
     <param>
-      <key>bw0</key>
-      <value>0</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>center_freq1</key>
-      <value>0</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>gain1</key>
-      <value>0</value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
-      <key>ant1</key>
+      <key>label4</key>
       <value></value>
     </param>
     <param>
-      <key>bw1</key>
-      <value>0</value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>center_freq2</key>
-      <value>0</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>gain2</key>
-      <value>0</value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
     <param>
-      <key>ant2</key>
+      <key>label5</key>
       <value></value>
     </param>
     <param>
-      <key>bw2</key>
-      <value>0</value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>center_freq3</key>
-      <value>0</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>gain3</key>
-      <value>0</value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
     <param>
-      <key>ant3</key>
+      <key>label6</key>
       <value></value>
     </param>
     <param>
-      <key>bw3</key>
-      <value>0</value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>center_freq4</key>
-      <value>0</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>gain4</key>
-      <value>0</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
-      <key>ant4</key>
+      <key>label7</key>
       <value></value>
     </param>
     <param>
-      <key>bw4</key>
-      <value>0</value>
+      <key>width7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>center_freq5</key>
-      <value>0</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>gain5</key>
-      <value>0</value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
     <param>
-      <key>ant5</key>
+      <key>label8</key>
       <value></value>
     </param>
     <param>
-      <key>bw5</key>
-      <value>0</value>
+      <key>width8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>center_freq6</key>
-      <value>0</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>gain6</key>
-      <value>0</value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
     <param>
-      <key>ant6</key>
+      <key>label9</key>
       <value></value>
     </param>
     <param>
-      <key>bw6</key>
+      <key>width9</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq7</key>
+      <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain7</key>
+      <key>name</key>
+      <value>Transmit Spectrum</value>
+    </param>
+    <param>
+      <key>nconnections</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>showports</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>freqhalf</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>tr_chan</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant7</key>
+      <key>tr_level</key>
+      <value>0.0</value>
+    </param>
+    <param>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
+    </param>
+    <param>
+      <key>tr_tag</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>complex</value>
+    </param>
+    <param>
+      <key>update_time</key>
+      <value>0.10</value>
+    </param>
+    <param>
+      <key>wintype</key>
+      <value>firdes.WIN_BLACKMAN_hARRIS</value>
+    </param>
+    <param>
+      <key>ymax</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ymin</key>
+      <value>-140</value>
+    </param>
+  </block>
+  <block>
+    <key>parameter</key>
+    <param>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>bw7</key>
-      <value>0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>center_freq8</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>gain8</key>
+      <key>_coordinate</key>
+      <value>(304, 0)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant8</key>
+      <key>id</key>
+      <value>samp_rate</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value>Sample Rate</value>
+    </param>
+    <param>
+      <key>short_id</key>
+      <value>s</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>eng_float</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>1e6</value>
+    </param>
+  </block>
+  <block>
+    <key>uhd_usrp_sink</key>
+    <param>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>bw8</key>
-      <value>0</value>
+      <key>ant0</key>
+      <value></value>
     </param>
     <param>
-      <key>center_freq9</key>
+      <key>bw0</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain9</key>
-      <value>0</value>
+      <key>center_freq0</key>
+      <value>tun_freq</value>
     </param>
     <param>
-      <key>ant9</key>
+      <key>norm_gain0</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain0</key>
+      <value>tun_gain</value>
+    </param>
+    <param>
+      <key>ant10</key>
       <value></value>
     </param>
     <param>
-      <key>bw9</key>
+      <key>bw10</key>
       <value>0</value>
     </param>
     <param>
@@ -853,15 +960,19 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain10</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain10</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant10</key>
+      <key>ant11</key>
       <value></value>
     </param>
     <param>
-      <key>bw10</key>
+      <key>bw11</key>
       <value>0</value>
     </param>
     <param>
@@ -869,15 +980,19 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain11</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain11</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant11</key>
+      <key>ant12</key>
       <value></value>
     </param>
     <param>
-      <key>bw11</key>
+      <key>bw12</key>
       <value>0</value>
     </param>
     <param>
@@ -885,15 +1000,19 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain12</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain12</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant12</key>
+      <key>ant13</key>
       <value></value>
     </param>
     <param>
-      <key>bw12</key>
+      <key>bw13</key>
       <value>0</value>
     </param>
     <param>
@@ -901,15 +1020,19 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain13</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain13</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant13</key>
+      <key>ant14</key>
       <value></value>
     </param>
     <param>
-      <key>bw13</key>
+      <key>bw14</key>
       <value>0</value>
     </param>
     <param>
@@ -917,15 +1040,19 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain14</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain14</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant14</key>
+      <key>ant15</key>
       <value></value>
     </param>
     <param>
-      <key>bw14</key>
+      <key>bw15</key>
       <value>0</value>
     </param>
     <param>
@@ -933,15 +1060,19 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain15</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain15</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant15</key>
+      <key>ant16</key>
       <value></value>
     </param>
     <param>
-      <key>bw15</key>
+      <key>bw16</key>
       <value>0</value>
     </param>
     <param>
@@ -949,15 +1080,19 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain16</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain16</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant16</key>
+      <key>ant17</key>
       <value></value>
     </param>
     <param>
-      <key>bw16</key>
+      <key>bw17</key>
       <value>0</value>
     </param>
     <param>
@@ -965,15 +1100,19 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain17</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain17</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant17</key>
+      <key>ant18</key>
       <value></value>
     </param>
     <param>
-      <key>bw17</key>
+      <key>bw18</key>
       <value>0</value>
     </param>
     <param>
@@ -981,15 +1120,19 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain18</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain18</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant18</key>
+      <key>ant19</key>
       <value></value>
     </param>
     <param>
-      <key>bw18</key>
+      <key>bw19</key>
       <value>0</value>
     </param>
     <param>
@@ -997,23 +1140,31 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain19</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain19</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant19</key>
+      <key>ant1</key>
       <value></value>
     </param>
     <param>
-      <key>bw19</key>
+      <key>bw1</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq20</key>
+      <key>center_freq1</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain20</key>
+      <key>norm_gain1</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain1</key>
       <value>0</value>
     </param>
     <param>
@@ -1025,11 +1176,15 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq21</key>
+      <key>center_freq20</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain21</key>
+      <key>norm_gain20</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain20</key>
       <value>0</value>
     </param>
     <param>
@@ -1041,11 +1196,15 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq22</key>
+      <key>center_freq21</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain22</key>
+      <key>norm_gain21</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain21</key>
       <value>0</value>
     </param>
     <param>
@@ -1057,11 +1216,15 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq23</key>
+      <key>center_freq22</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain23</key>
+      <key>norm_gain22</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain22</key>
       <value>0</value>
     </param>
     <param>
@@ -1073,11 +1236,15 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq24</key>
+      <key>center_freq23</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain24</key>
+      <key>norm_gain23</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain23</key>
       <value>0</value>
     </param>
     <param>
@@ -1089,11 +1256,15 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq25</key>
+      <key>center_freq24</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain25</key>
+      <key>norm_gain24</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain24</key>
       <value>0</value>
     </param>
     <param>
@@ -1105,11 +1276,15 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq26</key>
+      <key>center_freq25</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain26</key>
+      <key>norm_gain25</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain25</key>
       <value>0</value>
     </param>
     <param>
@@ -1121,11 +1296,15 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq27</key>
+      <key>center_freq26</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain27</key>
+      <key>norm_gain26</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain26</key>
       <value>0</value>
     </param>
     <param>
@@ -1137,11 +1316,15 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq28</key>
+      <key>center_freq27</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain28</key>
+      <key>norm_gain27</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain27</key>
       <value>0</value>
     </param>
     <param>
@@ -1153,11 +1336,15 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq29</key>
+      <key>center_freq28</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain29</key>
+      <key>norm_gain28</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain28</key>
       <value>0</value>
     </param>
     <param>
@@ -1169,11 +1356,35 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq30</key>
+      <key>center_freq29</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain30</key>
+      <key>norm_gain29</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain29</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant2</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw2</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq2</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain2</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain2</key>
       <value>0</value>
     </param>
     <param>
@@ -1185,11 +1396,15 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq31</key>
+      <key>center_freq30</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain31</key>
+      <key>norm_gain30</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain30</key>
       <value>0</value>
     </param>
     <param>
@@ -1201,310 +1416,324 @@
       <value>0</value>
     </param>
     <param>
-      <key>len_tag_name</key>
-      <value></value>
+      <key>center_freq31</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>norm_gain31</key>
+      <value>False</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>gain31</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant3</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(617, 163)</value>
+      <key>bw3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>center_freq3</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_multiply_const_vxx</key>
     <param>
-      <key>id</key>
-      <value>blocks_multiply_const_vxx_0</value>
+      <key>norm_gain3</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>gain3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>ant4</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>const</key>
-      <value>ampl</value>
+      <key>center_freq4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>norm_gain4</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>gain4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>ant5</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>bw5</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>center_freq5</key>
       <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(388, 193)</value>
+      <key>norm_gain5</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>gain5</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_freq_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_freq_sink_x_0</value>
+      <key>ant6</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>bw6</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>center_freq6</key>
+      <value>0</value>
     </param>
     <param>
-      <key>name</key>
-      <value>Transmit Spectrum</value>
+      <key>norm_gain6</key>
+      <value>False</value>
     </param>
     <param>
-      <key>fftsize</key>
-      <value>1024</value>
+      <key>gain6</key>
+      <value>0</value>
     </param>
     <param>
-      <key>wintype</key>
-      <value>firdes.WIN_BLACKMAN_hARRIS</value>
+      <key>ant7</key>
+      <value></value>
     </param>
     <param>
-      <key>fc</key>
-      <value>tun_freq</value>
+      <key>bw7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>bw</key>
-      <value>samp_rate</value>
+      <key>center_freq7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>autoscale</key>
-      <value>True</value>
+      <key>norm_gain7</key>
+      <value>False</value>
     </param>
     <param>
-      <key>average</key>
-      <value>1.0</value>
+      <key>gain7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-140</value>
+      <key>ant8</key>
+      <value></value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>10</value>
+      <key>bw8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>nconnections</key>
-      <value>1</value>
+      <key>center_freq8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>norm_gain8</key>
+      <value>False</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value></value>
+      <key>gain8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label1</key>
+      <key>ant9</key>
       <value></value>
     </param>
     <param>
-      <key>width1</key>
-      <value>1</value>
+      <key>bw9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>center_freq9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>norm_gain9</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label2</key>
+      <key>gain9</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>clock_rate</key>
+      <value>0.0</value>
+    </param>
+    <param>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>dev_addr</key>
+      <value>address</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>dev_args</key>
+      <value>""</value>
     </param>
     <param>
-      <key>label3</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>_coordinate</key>
+      <value>(617, 163)</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>id</key>
+      <value>uhd_usrp_sink_0</value>
     </param>
     <param>
-      <key>label4</key>
+      <key>type</key>
+      <value>fc32</value>
+    </param>
+    <param>
+      <key>len_tag_name</key>
       <value></value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>clock_source0</key>
+      <value></value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>sd_spec0</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>time_source0</key>
+      <value></value>
     </param>
     <param>
-      <key>label5</key>
+      <key>clock_source1</key>
       <value></value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>sd_spec1</key>
+      <value></value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>time_source1</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>clock_source2</key>
+      <value></value>
     </param>
     <param>
-      <key>label6</key>
+      <key>sd_spec2</key>
       <value></value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>time_source2</key>
+      <value></value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
+      <key>clock_source3</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>sd_spec3</key>
+      <value></value>
     </param>
     <param>
-      <key>label7</key>
+      <key>time_source3</key>
       <value></value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>clock_source4</key>
+      <value></value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>sd_spec4</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>time_source4</key>
+      <value></value>
     </param>
     <param>
-      <key>label8</key>
+      <key>clock_source5</key>
       <value></value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>sd_spec5</key>
+      <value></value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>time_source5</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>clock_source6</key>
+      <value></value>
     </param>
     <param>
-      <key>label9</key>
+      <key>sd_spec6</key>
       <value></value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>time_source6</key>
+      <value></value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>clock_source7</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>sd_spec7</key>
+      <value></value>
     </param>
     <param>
-      <key>label10</key>
+      <key>time_source7</key>
       <value></value>
     </param>
     <param>
-      <key>width10</key>
+      <key>nchan</key>
       <value>1</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"dark blue"</value>
+      <key>num_mboards</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>samp_rate</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>stream_args</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>stream_chans</key>
+      <value>[]</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(619, 285)</value>
+      <key>sync</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>otw</key>
+      <value></value>
     </param>
   </block>
   <connection>
@@ -1515,19 +1744,19 @@
   </connection>
   <connection>
     <source_block_id>blocks_multiply_const_vxx_0</source_block_id>
-    <sink_block_id>uhd_usrp_sink_0</sink_block_id>
+    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_dxpsk_mod_0</source_block_id>
-    <sink_block_id>blocks_multiply_const_vxx_0</sink_block_id>
+    <source_block_id>blocks_multiply_const_vxx_0</source_block_id>
+    <sink_block_id>uhd_usrp_sink_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_multiply_const_vxx_0</source_block_id>
-    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
+    <source_block_id>digital_dxpsk_mod_0</source_block_id>
+    <sink_block_id>blocks_multiply_const_vxx_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
diff --git a/gr-uhd/examples/grc/uhd_wbfm_receive.grc 
b/gr-uhd/examples/grc/uhd_wbfm_receive.grc
index 153dbd9..8c90bcb 100644
--- a/gr-uhd/examples/grc/uhd_wbfm_receive.grc
+++ b/gr-uhd/examples/grc/uhd_wbfm_receive.grc
@@ -1,47 +1,52 @@
-<?xml version='1.0' encoding='ASCII'?>
+<?xml version='1.0' encoding='utf-8'?>
+<?grc format='1' created='3.7.8rc1'?>
 <flow_graph>
   <timestamp>Sat Jul 12 14:40:24 2014</timestamp>
   <block>
     <key>options</key>
     <param>
-      <key>id</key>
-      <value>uhd_wbfm_receive</value>
+      <key>author</key>
+      <value>Example</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>title</key>
-      <value>UHD WBFM Receive</value>
+      <key>window_size</key>
+      <value>1280, 1024</value>
     </param>
     <param>
-      <key>author</key>
-      <value>Example</value>
+      <key>category</key>
+      <value>Custom</value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>description</key>
       <value>WBFM Receive</value>
     </param>
     <param>
-      <key>window_size</key>
-      <value>1280, 1024</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>generate_options</key>
-      <value>qt_gui</value>
+      <key>_coordinate</key>
+      <value>(-2, 0)</value>
     </param>
     <param>
-      <key>category</key>
-      <value>Custom</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>run_options</key>
-      <value>prompt</value>
+      <key>generate_options</key>
+      <value>qt_gui</value>
     </param>
     <param>
-      <key>run</key>
-      <value>True</value>
+      <key>id</key>
+      <value>uhd_wbfm_receive</value>
     </param>
     <param>
       <key>max_nouts</key>
@@ -52,37 +57,33 @@
       <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>run_options</key>
+      <value>prompt</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(-2, 0)</value>
+      <key>run</key>
+      <value>True</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>thread_safe_setters</key>
+      <value></value>
+    </param>
+    <param>
+      <key>title</key>
+      <value>UHD WBFM Receive</value>
     </param>
   </block>
   <block>
     <key>variable</key>
     <param>
-      <key>id</key>
-      <value>audio_decim</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>value</key>
-      <value>10</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
       <key>_coordinate</key>
       <value>(607, 192)</value>
     </param>
@@ -90,344 +91,408 @@
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>parameter</key>
     <param>
       <key>id</key>
-      <value>address</value>
+      <value>audio_decim</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>value</key>
+      <value>10</value>
     </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
     <param>
-      <key>label</key>
-      <value>IP Address</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>value</key>
-      <value>addr=192.168.10.2</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>string</value>
+      <value>0</value>
     </param>
     <param>
-      <key>short_id</key>
-      <value>a</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(253, 277)</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(162, 0)</value>
+      <key>gui_hint</key>
+      <value>0,2,1,2</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>parameter</key>
     <param>
       <key>id</key>
-      <value>samp_rate</value>
+      <value>fine</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label</key>
+      <value>Fine Freq (MHz)</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Sample Rate</value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>value</key>
-      <value>400e3</value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>type</key>
-      <value>eng_float</value>
+      <key>start</key>
+      <value>-.1</value>
     </param>
     <param>
-      <key>short_id</key>
-      <value>s</value>
+      <key>step</key>
+      <value>.01</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>stop</key>
+      <value>.1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(315, 0)</value>
+      <key>rangeType</key>
+      <value>float</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
   </block>
   <block>
-    <key>parameter</key>
-    <param>
-      <key>id</key>
-      <value>gain</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
+    <key>variable_qtgui_range</key>
     <param>
-      <key>label</key>
-      <value>Default Gain</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>value</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>eng_float</value>
+      <value>freq/1e6</value>
     </param>
     <param>
-      <key>short_id</key>
-      <value>g</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(6, 276)</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(594, 0)</value>
+      <key>gui_hint</key>
+      <value>0,0,1,2</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>parameter</key>
     <param>
       <key>id</key>
-      <value>audio_output</value>
+      <value>tun_freq</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label</key>
+      <value>UHD Freq (MHz)</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Audio Output Device</value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>value</key>
-      <value></value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>type</key>
-      <value>string</value>
+      <key>start</key>
+      <value>87.9</value>
     </param>
     <param>
-      <key>short_id</key>
-      <value>O</value>
+      <key>step</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>stop</key>
+      <value>108.1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(732, 0)</value>
+      <key>rangeType</key>
+      <value>float</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
   </block>
   <block>
-    <key>analog_wfm_rcv</key>
+    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>analog_wfm_rcv</value>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>10</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>quad_rate</key>
-      <value>samp_rate</value>
+      <key>_coordinate</key>
+      <value>(141, 275)</value>
     </param>
     <param>
-      <key>audio_decimation</key>
-      <value>audio_decim</value>
+      <key>gui_hint</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>id</key>
+      <value>tun_gain</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>label</key>
+      <value>UHD Gain</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(597, 127)</value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>start</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>audio_sink</key>
     <param>
-      <key>id</key>
-      <value>audio_sink</value>
+      <key>step</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>stop</key>
+      <value>20</value>
     </param>
     <param>
-      <key>samp_rate</key>
-      <value>int(samp_rate/audio_decim)</value>
+      <key>rangeType</key>
+      <value>float</value>
     </param>
     <param>
-      <key>device_name</key>
-      <value>audio_output</value>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
     <param>
-      <key>ok_to_block</key>
-      <value>True</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>num_inputs</key>
+      <key>value</key>
       <value>1</value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(802, 188)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>1, 0, 1, 4</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>volume</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value>Volume</value>
+    </param>
+    <param>
+      <key>min_len</key>
+      <value>200</value>
+    </param>
+    <param>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
+    </param>
+    <param>
+      <key>start</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>step</key>
+      <value>0.1</value>
+    </param>
+    <param>
+      <key>stop</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>rangeType</key>
+      <value>float</value>
+    </param>
+    <param>
+      <key>widget</key>
+      <value>counter_slider</value>
+    </param>
+  </block>
+  <block>
+    <key>parameter</key>
+    <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(995, 135)</value>
+      <value>(162, 0)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_multiply_const_vxx</key>
     <param>
       <key>id</key>
-      <value>blocks_multiply_const_vxx</value>
+      <value>address</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label</key>
+      <value>IP Address</value>
+    </param>
+    <param>
+      <key>short_id</key>
+      <value>a</value>
     </param>
     <param>
       <key>type</key>
-      <value>float</value>
+      <value>string</value>
     </param>
     <param>
-      <key>const</key>
-      <value>volume</value>
+      <key>value</key>
+      <value>addr=192.168.10.2</value>
     </param>
+  </block>
+  <block>
+    <key>analog_wfm_rcv</key>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>audio_decimation</key>
+      <value>audio_decim</value>
     </param>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(597, 127)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
+      <key>id</key>
+      <value>analog_wfm_rcv</value>
+    </param>
+    <param>
       <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(808, 135)</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>quad_rate</key>
+      <value>samp_rate</value>
     </param>
   </block>
   <block>
-    <key>low_pass_filter</key>
+    <key>parameter</key>
     <param>
-      <key>id</key>
-      <value>low_pass_filter_0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>type</key>
-      <value>fir_filter_ccf</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>decim</key>
-      <value>1</value>
+      <key>_coordinate</key>
+      <value>(732, 0)</value>
     </param>
     <param>
-      <key>interp</key>
-      <value>1</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>gain</key>
-      <value>1</value>
+      <key>id</key>
+      <value>audio_output</value>
     </param>
     <param>
-      <key>samp_rate</key>
-      <value>samp_rate</value>
+      <key>label</key>
+      <value>Audio Output Device</value>
     </param>
     <param>
-      <key>cutoff_freq</key>
-      <value>115e3</value>
+      <key>short_id</key>
+      <value>O</value>
     </param>
     <param>
-      <key>width</key>
-      <value>30e3</value>
+      <key>type</key>
+      <value>string</value>
     </param>
     <param>
-      <key>win</key>
-      <value>firdes.WIN_HANN</value>
+      <key>value</key>
+      <value></value>
     </param>
+  </block>
+  <block>
+    <key>audio_sink</key>
     <param>
-      <key>beta</key>
-      <value>6.76</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
@@ -435,507 +500,612 @@
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>device_name</key>
+      <value>audio_output</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(261, 116)</value>
+      <value>(995, 135)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
+    <param>
+      <key>id</key>
+      <value>audio_sink</value>
+    </param>
+    <param>
+      <key>num_inputs</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>ok_to_block</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>samp_rate</key>
+      <value>int(samp_rate/audio_decim)</value>
+    </param>
   </block>
   <block>
-    <key>variable_qtgui_range</key>
+    <key>blocks_multiply_const_vxx</key>
     <param>
-      <key>id</key>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>const</key>
       <value>volume</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>label</key>
-      <value>Volume</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>value</key>
-      <value>1</value>
+      <key>_coordinate</key>
+      <value>(808, 135)</value>
     </param>
     <param>
-      <key>start</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>stop</key>
-      <value>10</value>
+      <key>id</key>
+      <value>blocks_multiply_const_vxx</value>
     </param>
     <param>
-      <key>step</key>
-      <value>0.1</value>
+      <key>type</key>
+      <value>float</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>parameter</key>
     <param>
-      <key>gui_hint</key>
-      <value>1, 0, 1, 4</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(802, 188)</value>
+      <value>(442, 0)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
+    <param>
+      <key>id</key>
+      <value>freq</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value>Default Frequency</value>
+    </param>
+    <param>
+      <key>short_id</key>
+      <value>f</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>eng_float</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>93.3e6</value>
+    </param>
   </block>
   <block>
-    <key>variable_qtgui_range</key>
+    <key>parameter</key>
     <param>
-      <key>id</key>
-      <value>fine</value>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
+      <key>_coordinate</key>
+      <value>(594, 0)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>gain</value>
+    </param>
+    <param>
       <key>label</key>
-      <value>Fine Freq (MHz)</value>
+      <value>Default Gain</value>
+    </param>
+    <param>
+      <key>short_id</key>
+      <value>g</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>eng_float</value>
     </param>
     <param>
       <key>value</key>
       <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>low_pass_filter</key>
     <param>
-      <key>start</key>
-      <value>-.1</value>
+      <key>beta</key>
+      <value>6.76</value>
     </param>
     <param>
-      <key>stop</key>
-      <value>.1</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>step</key>
-      <value>.01</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>cutoff_freq</key>
+      <value>115e3</value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>decim</key>
+      <value>1</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>0,2,1,2</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>type</key>
+      <value>fir_filter_ccf</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(253, 277)</value>
+      <value>(261, 116)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>tun_gain</value>
+      <key>gain</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>id</key>
+      <value>low_pass_filter_0</value>
     </param>
     <param>
-      <key>label</key>
-      <value>UHD Gain</value>
+      <key>interp</key>
+      <value>1</value>
     </param>
     <param>
-      <key>value</key>
-      <value>10</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>start</key>
+      <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>stop</key>
-      <value>20</value>
+      <key>samp_rate</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>step</key>
-      <value>1</value>
+      <key>width</key>
+      <value>30e3</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>win</key>
+      <value>firdes.WIN_HANN</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_freq_sink_x</key>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>average</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value></value>
+      <key>bw</key>
+      <value>samp_rate</value>
     </param>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
+      <key>fc</key>
+      <value>(tun_freq+fine)*1e6</value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>ctrlpanel</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>fftsize</key>
+      <value>512</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(141, 275)</value>
+      <value>(598, 272)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>2,0,2,4</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>uhd_usrp_source</key>
+    <param>
+      <key>grid</key>
+      <value>False</value>
+    </param>
     <param>
       <key>id</key>
-      <value>uhd_usrp_source_0</value>
+      <value>qtgui_freq_sink_x_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>type</key>
-      <value>fc32</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>otw</key>
-      <value></value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>stream_args</key>
+      <key>label1</key>
       <value></value>
     </param>
     <param>
-      <key>stream_chans</key>
-      <value>[]</value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>dev_addr</key>
-      <value>address</value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>dev_args</key>
-      <value>""</value>
+      <key>color10</key>
+      <value>"dark blue"</value>
     </param>
     <param>
-      <key>sync</key>
+      <key>label10</key>
       <value></value>
     </param>
     <param>
-      <key>clock_rate</key>
-      <value>0.0</value>
-    </param>
-    <param>
-      <key>num_mboards</key>
+      <key>width10</key>
       <value>1</value>
     </param>
     <param>
-      <key>clock_source0</key>
-      <value></value>
-    </param>
-    <param>
-      <key>time_source0</key>
-      <value></value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>sd_spec0</key>
-      <value></value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>clock_source1</key>
+      <key>label2</key>
       <value></value>
     </param>
     <param>
-      <key>time_source1</key>
-      <value></value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>sd_spec1</key>
-      <value></value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>clock_source2</key>
-      <value></value>
+      <key>color3</key>
+      <value>"green"</value>
     </param>
     <param>
-      <key>time_source2</key>
+      <key>label3</key>
       <value></value>
     </param>
     <param>
-      <key>sd_spec2</key>
-      <value></value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>clock_source3</key>
-      <value></value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>time_source3</key>
-      <value></value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
-      <key>sd_spec3</key>
+      <key>label4</key>
       <value></value>
     </param>
     <param>
-      <key>clock_source4</key>
-      <value></value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>time_source4</key>
-      <value></value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>sd_spec4</key>
-      <value></value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
     <param>
-      <key>clock_source5</key>
+      <key>label5</key>
       <value></value>
     </param>
     <param>
-      <key>time_source5</key>
-      <value></value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>sd_spec5</key>
-      <value></value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>clock_source6</key>
-      <value></value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
     <param>
-      <key>time_source6</key>
+      <key>label6</key>
       <value></value>
     </param>
     <param>
-      <key>sd_spec6</key>
-      <value></value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>clock_source7</key>
-      <value></value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>time_source7</key>
-      <value></value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
-      <key>sd_spec7</key>
+      <key>label7</key>
       <value></value>
     </param>
     <param>
-      <key>nchan</key>
+      <key>width7</key>
       <value>1</value>
     </param>
     <param>
-      <key>samp_rate</key>
-      <value>samp_rate</value>
-    </param>
-    <param>
-      <key>center_freq0</key>
-      <value>(tun_freq+fine)*1e6</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>gain0</key>
-      <value>tun_gain</value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
     <param>
-      <key>ant0</key>
+      <key>label8</key>
       <value></value>
     </param>
     <param>
-      <key>bw0</key>
-      <value>0</value>
+      <key>width8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>center_freq1</key>
-      <value>0</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>gain1</key>
-      <value>0</value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
     <param>
-      <key>ant1</key>
+      <key>label9</key>
       <value></value>
     </param>
     <param>
-      <key>bw1</key>
-      <value>0</value>
+      <key>width9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>center_freq2</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain2</key>
+      <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant2</key>
+      <key>name</key>
       <value></value>
     </param>
     <param>
-      <key>bw2</key>
-      <value>0</value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>center_freq3</key>
-      <value>0</value>
+      <key>showports</key>
+      <value>True</value>
     </param>
     <param>
-      <key>gain3</key>
-      <value>0</value>
+      <key>freqhalf</key>
+      <value>True</value>
     </param>
     <param>
-      <key>ant3</key>
-      <value></value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>bw3</key>
-      <value>0</value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>center_freq4</key>
-      <value>0</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
     </param>
     <param>
-      <key>gain4</key>
-      <value>0</value>
+      <key>tr_tag</key>
+      <value>""</value>
     </param>
     <param>
-      <key>ant4</key>
-      <value></value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>bw4</key>
-      <value>0</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>center_freq5</key>
-      <value>0</value>
+      <key>wintype</key>
+      <value>firdes.WIN_BLACKMAN_hARRIS</value>
     </param>
     <param>
-      <key>gain5</key>
-      <value>0</value>
+      <key>ymax</key>
+      <value>10</value>
     </param>
     <param>
-      <key>ant5</key>
-      <value></value>
+      <key>ymin</key>
+      <value>-140</value>
     </param>
+  </block>
+  <block>
+    <key>parameter</key>
     <param>
-      <key>bw5</key>
-      <value>0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>center_freq6</key>
-      <value>0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>gain6</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>ant6</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(315, 0)</value>
     </param>
     <param>
-      <key>bw6</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq7</key>
-      <value>0</value>
+      <key>id</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>gain7</key>
-      <value>0</value>
+      <key>label</key>
+      <value>Sample Rate</value>
     </param>
     <param>
-      <key>ant7</key>
-      <value></value>
+      <key>short_id</key>
+      <value>s</value>
     </param>
     <param>
-      <key>bw7</key>
-      <value>0</value>
+      <key>type</key>
+      <value>eng_float</value>
     </param>
     <param>
-      <key>center_freq8</key>
-      <value>0</value>
+      <key>value</key>
+      <value>400e3</value>
     </param>
+  </block>
+  <block>
+    <key>uhd_usrp_source</key>
     <param>
-      <key>gain8</key>
-      <value>0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>ant8</key>
+      <key>ant0</key>
       <value></value>
     </param>
     <param>
-      <key>bw8</key>
+      <key>bw0</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq9</key>
-      <value>0</value>
+      <key>center_freq0</key>
+      <value>(tun_freq+fine)*1e6</value>
     </param>
     <param>
-      <key>gain9</key>
-      <value>0</value>
+      <key>norm_gain0</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain0</key>
+      <value>tun_gain</value>
     </param>
     <param>
-      <key>ant9</key>
+      <key>ant10</key>
       <value></value>
     </param>
     <param>
-      <key>bw9</key>
+      <key>bw10</key>
       <value>0</value>
     </param>
     <param>
@@ -943,15 +1113,19 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain10</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain10</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant10</key>
+      <key>ant11</key>
       <value></value>
     </param>
     <param>
-      <key>bw10</key>
+      <key>bw11</key>
       <value>0</value>
     </param>
     <param>
@@ -959,15 +1133,19 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain11</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain11</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant11</key>
+      <key>ant12</key>
       <value></value>
     </param>
     <param>
-      <key>bw11</key>
+      <key>bw12</key>
       <value>0</value>
     </param>
     <param>
@@ -975,15 +1153,19 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain12</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain12</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant12</key>
+      <key>ant13</key>
       <value></value>
     </param>
     <param>
-      <key>bw12</key>
+      <key>bw13</key>
       <value>0</value>
     </param>
     <param>
@@ -991,15 +1173,19 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain13</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain13</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant13</key>
+      <key>ant14</key>
       <value></value>
     </param>
     <param>
-      <key>bw13</key>
+      <key>bw14</key>
       <value>0</value>
     </param>
     <param>
@@ -1007,15 +1193,19 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain14</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain14</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant14</key>
+      <key>ant15</key>
       <value></value>
     </param>
     <param>
-      <key>bw14</key>
+      <key>bw15</key>
       <value>0</value>
     </param>
     <param>
@@ -1023,15 +1213,19 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain15</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain15</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant15</key>
+      <key>ant16</key>
       <value></value>
     </param>
     <param>
-      <key>bw15</key>
+      <key>bw16</key>
       <value>0</value>
     </param>
     <param>
@@ -1039,15 +1233,19 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain16</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain16</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant16</key>
+      <key>ant17</key>
       <value></value>
     </param>
     <param>
-      <key>bw16</key>
+      <key>bw17</key>
       <value>0</value>
     </param>
     <param>
@@ -1055,15 +1253,19 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain17</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain17</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant17</key>
+      <key>ant18</key>
       <value></value>
     </param>
     <param>
-      <key>bw17</key>
+      <key>bw18</key>
       <value>0</value>
     </param>
     <param>
@@ -1071,15 +1273,19 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain18</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain18</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant18</key>
+      <key>ant19</key>
       <value></value>
     </param>
     <param>
-      <key>bw18</key>
+      <key>bw19</key>
       <value>0</value>
     </param>
     <param>
@@ -1087,23 +1293,31 @@
       <value>0</value>
     </param>
     <param>
+      <key>norm_gain19</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>gain19</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant19</key>
+      <key>ant1</key>
       <value></value>
     </param>
     <param>
-      <key>bw19</key>
+      <key>bw1</key>
       <value>0</value>
     </param>
     <param>
-      <key>center_freq20</key>
+      <key>center_freq1</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain20</key>
+      <key>norm_gain1</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain1</key>
       <value>0</value>
     </param>
     <param>
@@ -1115,11 +1329,15 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq21</key>
+      <key>center_freq20</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain21</key>
+      <key>norm_gain20</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain20</key>
       <value>0</value>
     </param>
     <param>
@@ -1131,11 +1349,15 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq22</key>
+      <key>center_freq21</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain22</key>
+      <key>norm_gain21</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain21</key>
       <value>0</value>
     </param>
     <param>
@@ -1147,11 +1369,15 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq23</key>
+      <key>center_freq22</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain23</key>
+      <key>norm_gain22</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain22</key>
       <value>0</value>
     </param>
     <param>
@@ -1163,11 +1389,15 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq24</key>
+      <key>center_freq23</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain24</key>
+      <key>norm_gain23</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain23</key>
       <value>0</value>
     </param>
     <param>
@@ -1179,11 +1409,15 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq25</key>
+      <key>center_freq24</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain25</key>
+      <key>norm_gain24</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain24</key>
       <value>0</value>
     </param>
     <param>
@@ -1195,11 +1429,15 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq26</key>
+      <key>center_freq25</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain26</key>
+      <key>norm_gain25</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain25</key>
       <value>0</value>
     </param>
     <param>
@@ -1211,11 +1449,15 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq27</key>
+      <key>center_freq26</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain27</key>
+      <key>norm_gain26</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain26</key>
       <value>0</value>
     </param>
     <param>
@@ -1227,11 +1469,15 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq28</key>
+      <key>center_freq27</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain28</key>
+      <key>norm_gain27</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain27</key>
       <value>0</value>
     </param>
     <param>
@@ -1243,11 +1489,15 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq29</key>
+      <key>center_freq28</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain29</key>
+      <key>norm_gain28</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain28</key>
       <value>0</value>
     </param>
     <param>
@@ -1259,408 +1509,399 @@
       <value>0</value>
     </param>
     <param>
-      <key>center_freq30</key>
+      <key>center_freq29</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain30</key>
-      <value>0</value>
+      <key>norm_gain29</key>
+      <value>False</value>
     </param>
     <param>
-      <key>ant30</key>
-      <value></value>
+      <key>gain29</key>
+      <value>0</value>
     </param>
     <param>
-      <key>bw30</key>
-      <value>0</value>
+      <key>ant2</key>
+      <value></value>
     </param>
     <param>
-      <key>center_freq31</key>
+      <key>bw2</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain31</key>
+      <key>center_freq2</key>
       <value>0</value>
     </param>
     <param>
-      <key>ant31</key>
-      <value></value>
+      <key>norm_gain2</key>
+      <value>False</value>
     </param>
     <param>
-      <key>bw31</key>
+      <key>gain2</key>
       <value>0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
+      <key>ant30</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>bw30</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>center_freq30</key>
       <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(0, 139)</value>
+      <key>norm_gain30</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>gain30</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_freq_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_freq_sink_x_0</value>
+      <key>ant31</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>bw31</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>center_freq31</key>
+      <value>0</value>
     </param>
     <param>
-      <key>name</key>
-      <value>FFT Plot</value>
+      <key>norm_gain31</key>
+      <value>False</value>
     </param>
     <param>
-      <key>fftsize</key>
-      <value>512</value>
+      <key>gain31</key>
+      <value>0</value>
     </param>
     <param>
-      <key>wintype</key>
-      <value>firdes.WIN_BLACKMAN_hARRIS</value>
+      <key>ant3</key>
+      <value></value>
     </param>
     <param>
-      <key>fc</key>
-      <value>(tun_freq+fine)*1e6</value>
+      <key>bw3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>bw</key>
-      <value>samp_rate</value>
+      <key>center_freq3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>autoscale</key>
+      <key>norm_gain3</key>
       <value>False</value>
     </param>
     <param>
-      <key>average</key>
-      <value>1.0</value>
+      <key>gain3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-140</value>
+      <key>ant4</key>
+      <value></value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>10</value>
+      <key>bw4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>nconnections</key>
-      <value>1</value>
+      <key>center_freq4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>norm_gain4</key>
+      <value>False</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>2,0,2,4</value>
+      <key>gain4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label1</key>
+      <key>ant5</key>
       <value></value>
     </param>
     <param>
-      <key>width1</key>
-      <value>1</value>
+      <key>bw5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>center_freq5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>norm_gain5</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label2</key>
+      <key>ant6</key>
       <value></value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>bw6</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>center_freq6</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>norm_gain6</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label3</key>
+      <key>gain6</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant7</key>
       <value></value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>bw7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>center_freq7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>norm_gain7</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label4</key>
-      <value></value>
+      <key>gain7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>ant8</key>
+      <value></value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>bw8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>center_freq8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label5</key>
-      <value></value>
+      <key>norm_gain8</key>
+      <value>False</value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>gain8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>ant9</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>bw9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label6</key>
-      <value></value>
+      <key>center_freq9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>norm_gain9</key>
+      <value>False</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
+      <key>gain9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>clock_rate</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>label7</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>dev_addr</key>
+      <value>address</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>dev_args</key>
+      <value>""</value>
     </param>
     <param>
-      <key>label8</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>_coordinate</key>
+      <value>(0, 139)</value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>id</key>
+      <value>uhd_usrp_source_0</value>
     </param>
     <param>
-      <key>label9</key>
-      <value></value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>clock_source0</key>
+      <value></value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>sd_spec0</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>time_source0</key>
+      <value></value>
     </param>
     <param>
-      <key>label10</key>
+      <key>clock_source1</key>
       <value></value>
     </param>
     <param>
-      <key>width10</key>
-      <value>1</value>
+      <key>sd_spec1</key>
+      <value></value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"dark blue"</value>
+      <key>time_source1</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>clock_source2</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
+      <key>sd_spec2</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>time_source2</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(598, 272)</value>
+      <key>clock_source3</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>sd_spec3</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>parameter</key>
     <param>
-      <key>id</key>
-      <value>freq</value>
+      <key>time_source3</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>clock_source4</key>
+      <value></value>
     </param>
     <param>
-      <key>label</key>
-      <value>Default Frequency</value>
+      <key>sd_spec4</key>
+      <value></value>
     </param>
     <param>
-      <key>value</key>
-      <value>93.3e6</value>
+      <key>time_source4</key>
+      <value></value>
     </param>
     <param>
-      <key>type</key>
-      <value>eng_float</value>
+      <key>clock_source5</key>
+      <value></value>
     </param>
     <param>
-      <key>short_id</key>
-      <value>f</value>
+      <key>sd_spec5</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
+      <key>time_source5</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(442, 0)</value>
+      <key>clock_source6</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>sd_spec6</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>tun_freq</value>
+      <key>time_source6</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>clock_source7</key>
+      <value></value>
     </param>
     <param>
-      <key>label</key>
-      <value>UHD Freq (MHz)</value>
+      <key>sd_spec7</key>
+      <value></value>
     </param>
     <param>
-      <key>value</key>
-      <value>freq/1e6</value>
+      <key>time_source7</key>
+      <value></value>
     </param>
     <param>
-      <key>start</key>
-      <value>87.9</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>stop</key>
-      <value>108.1</value>
+      <key>nchan</key>
+      <value>1</value>
     </param>
     <param>
-      <key>step</key>
+      <key>num_mboards</key>
       <value>1</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>type</key>
+      <value>fc32</value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>samp_rate</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>stream_args</key>
+      <value></value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>0,0,1,2</value>
+      <key>stream_chans</key>
+      <value>[]</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>sync</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(6, 276)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>otw</key>
+      <value></value>
     </param>
   </block>
   <connection>
-    <source_block_id>low_pass_filter_0</source_block_id>
-    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
+    <source_block_id>analog_wfm_rcv</source_block_id>
+    <sink_block_id>blocks_multiply_const_vxx</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>uhd_usrp_source_0</source_block_id>
-    <sink_block_id>low_pass_filter_0</sink_block_id>
+    <source_block_id>blocks_multiply_const_vxx</source_block_id>
+    <sink_block_id>audio_sink</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
@@ -1671,14 +1912,14 @@
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>analog_wfm_rcv</source_block_id>
-    <sink_block_id>blocks_multiply_const_vxx</sink_block_id>
+    <source_block_id>low_pass_filter_0</source_block_id>
+    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_multiply_const_vxx</source_block_id>
-    <sink_block_id>audio_sink</sink_block_id>
+    <source_block_id>uhd_usrp_source_0</source_block_id>
+    <sink_block_id>low_pass_filter_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
diff --git a/gr-zeromq/examples/zeromq_pubsub.grc 
b/gr-zeromq/examples/zeromq_pubsub.grc
index 1c047eb..b36d08d 100644
--- a/gr-zeromq/examples/zeromq_pubsub.grc
+++ b/gr-zeromq/examples/zeromq_pubsub.grc
@@ -1,22 +1,27 @@
-<?xml version='1.0' encoding='ASCII'?>
+<?xml version='1.0' encoding='utf-8'?>
+<?grc format='1' created='3.7.8rc1'?>
 <flow_graph>
   <timestamp>Mon Jul 14 14:44:33 2014</timestamp>
   <block>
     <key>options</key>
     <param>
-      <key>id</key>
-      <value>zeromq_pubsub</value>
+      <key>author</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>title</key>
-      <value></value>
+      <key>window_size</key>
+      <value>1280, 1024</value>
     </param>
     <param>
-      <key>author</key>
+      <key>category</key>
+      <value>Custom</value>
+    </param>
+    <param>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
@@ -24,16 +29,32 @@
       <value></value>
     </param>
     <param>
-      <key>window_size</key>
-      <value>1280, 1024</value>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(10, 10)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
       <key>generate_options</key>
       <value>qt_gui</value>
     </param>
     <param>
-      <key>category</key>
-      <value>Custom</value>
+      <key>id</key>
+      <value>zeromq_pubsub</value>
+    </param>
+    <param>
+      <key>max_nouts</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>realtime_scheduling</key>
+      <value></value>
     </param>
     <param>
       <key>run_options</key>
@@ -44,89 +65,112 @@
       <value>True</value>
     </param>
     <param>
-      <key>max_nouts</key>
-      <value>0</value>
+      <key>thread_safe_setters</key>
+      <value></value>
     </param>
     <param>
-      <key>realtime_scheduling</key>
+      <key>title</key>
       <value></value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(10, 10)</value>
+      <value>(10, 170)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
       <value>samp_rate</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
       <key>value</key>
       <value>32000</value>
     </param>
+  </block>
+  <block>
+    <key>analog_fastnoise_source_x</key>
+    <param>
+      <key>amp</key>
+      <value>0.1</value>
+    </param>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(10, 170)</value>
+      <value>(169, 196)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>analog_sig_source_x</key>
     <param>
       <key>id</key>
-      <value>analog_sig_source_x_0</value>
+      <value>analog_fastnoise_source_x_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>samp_rate</key>
-      <value>samp_rate</value>
+      <key>noise_type</key>
+      <value>analog.GR_GAUSSIAN</value>
     </param>
     <param>
-      <key>waveform</key>
-      <value>analog.GR_TRI_WAVE</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>freq</key>
-      <value>2000</value>
+      <key>seed</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>samples</key>
+      <value>8192</value>
     </param>
+  </block>
+  <block>
+    <key>analog_sig_source_x</key>
     <param>
       <key>amp</key>
       <value>1</value>
     </param>
     <param>
-      <key>offset</key>
-      <value>0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
@@ -134,12 +178,12 @@
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>freq</key>
+      <value>2000</value>
     </param>
     <param>
       <key>_coordinate</key>
@@ -149,44 +193,52 @@
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_add_xx</key>
     <param>
       <key>id</key>
-      <value>blocks_add_xx_0</value>
+      <value>analog_sig_source_x_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>offset</key>
+      <value>0</value>
     </param>
     <param>
       <key>type</key>
       <value>complex</value>
     </param>
     <param>
-      <key>num_inputs</key>
-      <value>2</value>
+      <key>samp_rate</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>waveform</key>
+      <value>analog.GR_TRI_WAVE</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_add_xx</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
@@ -196,48 +248,48 @@
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_throttle</key>
     <param>
       <key>id</key>
-      <value>blocks_throttle_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>blocks_add_xx_0</value>
     </param>
     <param>
       <key>type</key>
       <value>complex</value>
     </param>
     <param>
-      <key>samples_per_second</key>
-      <value>samp_rate</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ignoretag</key>
-      <value>True</value>
+      <key>num_inputs</key>
+      <value>2</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_throttle</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
@@ -247,18 +299,27 @@
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>zeromq_pub_sink</key>
     <param>
       <key>id</key>
-      <value>zeromq_pub_sink_0</value>
+      <value>blocks_throttle_0</value>
     </param>
     <param>
-      <key>_enabled</key>
+      <key>ignoretag</key>
       <value>True</value>
     </param>
     <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>samples_per_second</key>
+      <value>samp_rate</value>
+    </param>
+    <param>
       <key>type</key>
       <value>complex</value>
     </param>
@@ -266,495 +327,487 @@
       <key>vlen</key>
       <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_time_sink_x</key>
     <param>
-      <key>address</key>
-      <value>tcp://127.0.0.1:5555</value>
-    </param>
-    <param>
-      <key>timeout</key>
-      <value>100</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(723, 153)</value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>analog_fastnoise_source_x</key>
     <param>
-      <key>id</key>
-      <value>analog_fastnoise_source_x_0</value>
+      <key>entags</key>
+      <value>True</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>_coordinate</key>
+      <value>(408, 331)</value>
     </param>
     <param>
-      <key>noise_type</key>
-      <value>analog.GR_GAUSSIAN</value>
+      <key>gui_hint</key>
+      <value></value>
     </param>
     <param>
-      <key>amp</key>
-      <value>0.1</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>seed</key>
-      <value>0</value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>samples</key>
-      <value>8192</value>
+      <key>id</key>
+      <value>qtgui_time_sink_x_0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>label1</key>
+      <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(169, 196)</value>
+      <key>marker1</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>style1</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>zeromq_sub_source</key>
     <param>
-      <key>id</key>
-      <value>zeromq_sub_source_0</value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>color10</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>label10</key>
+      <value></value>
     </param>
     <param>
-      <key>address</key>
-      <value>tcp://127.0.0.1:5555</value>
+      <key>marker10</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>timeout</key>
-      <value>100</value>
+      <key>style10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>label2</key>
+      <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(185, 327)</value>
+      <key>marker2</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>style2</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_time_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_time_sink_x_0</value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>color3</key>
+      <value>"green"</value>
     </param>
     <param>
-      <key>name</key>
-      <value>""</value>
+      <key>label3</key>
+      <value></value>
     </param>
     <param>
-      <key>ylabel</key>
-      <value>Amplitude</value>
+      <key>marker3</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>yunit</key>
-      <value>""</value>
+      <key>style3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>size</key>
-      <value>100</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>srate</key>
-      <value>samp_rate</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>grid</key>
-      <value>False</value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
-      <key>autoscale</key>
-      <value>False</value>
+      <key>label4</key>
+      <value></value>
     </param>
     <param>
-      <key>ymin</key>
+      <key>marker4</key>
       <value>-1</value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>2</value>
+      <key>style4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>nconnections</key>
+      <key>width4</key>
       <value>1</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>entags</key>
-      <value>True</value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
     <param>
-      <key>gui_hint</key>
+      <key>label5</key>
       <value></value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_AUTO</value>
-    </param>
-    <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
+      <key>marker5</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>style5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>tr_delay</key>
-      <value>0</value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>tr_chan</key>
-      <value>0</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>""</value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
     <param>
-      <key>label1</key>
+      <key>label6</key>
       <value></value>
     </param>
     <param>
-      <key>width1</key>
-      <value>1</value>
+      <key>marker6</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>style6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style1</key>
+      <key>width6</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker1</key>
-      <value>-1</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
-      <key>label2</key>
+      <key>label7</key>
       <value></value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>marker7</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>style7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style2</key>
+      <key>width7</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker2</key>
-      <value>-1</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
     <param>
-      <key>label3</key>
+      <key>label8</key>
       <value></value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>marker8</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>style8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style3</key>
+      <key>width8</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker3</key>
-      <value>-1</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
     <param>
-      <key>label4</key>
+      <key>label9</key>
       <value></value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>marker9</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>style9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style4</key>
+      <key>width9</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker4</key>
-      <value>-1</value>
+      <key>name</key>
+      <value>""</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label5</key>
-      <value></value>
+      <key>size</key>
+      <value>100</value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>srate</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style5</key>
-      <value>1</value>
+      <key>tr_delay</key>
+      <value>0</value>
     </param>
     <param>
-      <key>marker5</key>
-      <value>-1</value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_AUTO</value>
     </param>
     <param>
-      <key>label6</key>
-      <value></value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>tr_tag</key>
+      <value>""</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>style6</key>
-      <value>1</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>marker6</key>
-      <value>-1</value>
+      <key>ylabel</key>
+      <value>Amplitude</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>yunit</key>
+      <value>""</value>
     </param>
     <param>
-      <key>label7</key>
-      <value></value>
+      <key>ymax</key>
+      <value>2</value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>ymin</key>
+      <value>-1</value>
     </param>
+  </block>
+  <block>
+    <key>zeromq_pub_sink</key>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>address</key>
+      <value>tcp://127.0.0.1:5555</value>
     </param>
     <param>
-      <key>style7</key>
-      <value>1</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>marker7</key>
-      <value>-1</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>label8</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>_coordinate</key>
+      <value>(723, 153)</value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style8</key>
-      <value>1</value>
+      <key>id</key>
+      <value>zeromq_pub_sink_0</value>
     </param>
     <param>
-      <key>marker8</key>
-      <value>-1</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>pass_tags</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label9</key>
-      <value></value>
+      <key>timeout</key>
+      <value>100</value>
     </param>
     <param>
-      <key>width9</key>
+      <key>vlen</key>
       <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>zeromq_sub_source</key>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>address</key>
+      <value>tcp://127.0.0.1:5555</value>
     </param>
     <param>
-      <key>style9</key>
-      <value>1</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>marker9</key>
-      <value>-1</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>label10</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>width10</key>
-      <value>1</value>
+      <key>_coordinate</key>
+      <value>(184, 331)</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"blue"</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style10</key>
-      <value>1</value>
+      <key>id</key>
+      <value>zeromq_sub_source_0</value>
     </param>
     <param>
-      <key>marker10</key>
-      <value>-1</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>pass_tags</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(410, 319)</value>
+      <key>timeout</key>
+      <value>100</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
   </block>
   <connection>
-    <source_block_id>analog_sig_source_x_0</source_block_id>
+    <source_block_id>analog_fastnoise_source_x_0</source_block_id>
     <sink_block_id>blocks_add_xx_0</sink_block_id>
     <source_key>0</source_key>
-    <sink_key>0</sink_key>
+    <sink_key>1</sink_key>
   </connection>
   <connection>
-    <source_block_id>analog_fastnoise_source_x_0</source_block_id>
+    <source_block_id>analog_sig_source_x_0</source_block_id>
     <sink_block_id>blocks_add_xx_0</sink_block_id>
     <source_key>0</source_key>
-    <sink_key>1</sink_key>
+    <sink_key>0</sink_key>
   </connection>
   <connection>
     <source_block_id>blocks_add_xx_0</source_block_id>
diff --git a/gr-zeromq/examples/zeromq_pushpull.grc 
b/gr-zeromq/examples/zeromq_pushpull.grc
index 25459e0..b2e8e51 100644
--- a/gr-zeromq/examples/zeromq_pushpull.grc
+++ b/gr-zeromq/examples/zeromq_pushpull.grc
@@ -1,84 +1,89 @@
-<?xml version='1.0' encoding='ASCII'?>
+<?xml version='1.0' encoding='utf-8'?>
+<?grc format='1' created='3.7.8rc1'?>
 <flow_graph>
   <timestamp>Mon Jul 14 14:45:00 2014</timestamp>
   <block>
-    <key>analog_sig_source_x</key>
+    <key>options</key>
     <param>
-      <key>id</key>
-      <value>analog_sig_source_x_0</value>
+      <key>author</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>window_size</key>
+      <value>1280, 1024</value>
     </param>
     <param>
-      <key>samp_rate</key>
-      <value>samp_rate</value>
+      <key>category</key>
+      <value>Custom</value>
     </param>
     <param>
-      <key>waveform</key>
-      <value>analog.GR_TRI_WAVE</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>freq</key>
-      <value>2000</value>
+      <key>description</key>
+      <value></value>
     </param>
     <param>
-      <key>amp</key>
-      <value>1</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>offset</key>
+      <key>_coordinate</key>
+      <value>(10, 10)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>generate_options</key>
+      <value>qt_gui</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>id</key>
+      <value>zeromq_pushpull</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>max_nouts</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>realtime_scheduling</key>
+      <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(170, 78)</value>
+      <key>run_options</key>
+      <value>prompt</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>run</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>thread_safe_setters</key>
+      <value></value>
+    </param>
+    <param>
+      <key>title</key>
+      <value></value>
     </param>
   </block>
   <block>
     <key>variable</key>
     <param>
-      <key>id</key>
-      <value>samp_rate</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>value</key>
-      <value>32000</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
       <key>_coordinate</key>
       <value>(10, 170)</value>
     </param>
@@ -86,133 +91,145 @@
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_add_xx</key>
     <param>
       <key>id</key>
-      <value>blocks_add_xx_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>num_inputs</key>
-      <value>2</value>
+      <key>value</key>
+      <value>32000</value>
     </param>
+  </block>
+  <block>
+    <key>analog_fastnoise_source_x</key>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>amp</key>
+      <value>0.1</value>
     </param>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(409, 144)</value>
+      <value>(169, 196)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_throttle</key>
     <param>
       <key>id</key>
-      <value>blocks_throttle_0</value>
+      <value>analog_fastnoise_source_x_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>noise_type</key>
+      <value>analog.GR_GAUSSIAN</value>
     </param>
     <param>
       <key>type</key>
       <value>complex</value>
     </param>
     <param>
-      <key>samples_per_second</key>
-      <value>samp_rate</value>
+      <key>seed</key>
+      <value>0</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>samples</key>
+      <value>8192</value>
     </param>
+  </block>
+  <block>
+    <key>analog_sig_source_x</key>
     <param>
-      <key>ignoretag</key>
-      <value>True</value>
+      <key>amp</key>
+      <value>1</value>
     </param>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>freq</key>
+      <value>2000</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(529, 157)</value>
+      <value>(170, 78)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>zeromq_push_sink</key>
     <param>
       <key>id</key>
-      <value>zeromq_push_sink_0</value>
+      <value>analog_sig_source_x_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>offset</key>
+      <value>0</value>
     </param>
     <param>
       <key>type</key>
       <value>complex</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>samp_rate</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>address</key>
-      <value>tcp://127.0.0.1:5555</value>
+      <key>waveform</key>
+      <value>analog.GR_TRI_WAVE</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_add_xx</key>
     <param>
-      <key>timeout</key>
-      <value>100</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
@@ -220,515 +237,527 @@
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(722, 141)</value>
+      <value>(409, 144)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>analog_fastnoise_source_x</key>
     <param>
       <key>id</key>
-      <value>analog_fastnoise_source_x_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>blocks_add_xx_0</value>
     </param>
     <param>
       <key>type</key>
       <value>complex</value>
     </param>
     <param>
-      <key>noise_type</key>
-      <value>analog.GR_GAUSSIAN</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>amp</key>
-      <value>0.1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>seed</key>
-      <value>0</value>
+      <key>num_inputs</key>
+      <value>2</value>
     </param>
     <param>
-      <key>samples</key>
-      <value>8192</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_throttle</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(169, 196)</value>
+      <value>(529, 157)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>zeromq_pull_source</key>
     <param>
       <key>id</key>
-      <value>zeromq_pull_source_0</value>
+      <value>blocks_throttle_0</value>
     </param>
     <param>
-      <key>_enabled</key>
+      <key>ignoretag</key>
       <value>True</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>address</key>
-      <value>tcp://127.0.0.1:5555</value>
+      <key>samples_per_second</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>timeout</key>
-      <value>100</value>
+      <key>type</key>
+      <value>complex</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
+    </param>
+  </block>
+  <block>
+    <key>qtgui_time_sink_x</key>
+    <param>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>ctrlpanel</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>entags</key>
+      <value>True</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(167, 308)</value>
+      <value>(392, 307)</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>gui_hint</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>options</key>
     <param>
-      <key>id</key>
-      <value>zeromq_pushpull</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>title</key>
-      <value></value>
+      <key>id</key>
+      <value>qtgui_time_sink_x_0</value>
     </param>
     <param>
-      <key>author</key>
-      <value></value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>description</key>
-      <value></value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>window_size</key>
-      <value>1280, 1024</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>generate_options</key>
-      <value>qt_gui</value>
+      <key>label1</key>
+      <value></value>
     </param>
     <param>
-      <key>category</key>
-      <value>Custom</value>
+      <key>marker1</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>run_options</key>
-      <value>prompt</value>
+      <key>style1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>run</key>
-      <value>True</value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>max_nouts</key>
-      <value>0</value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>realtime_scheduling</key>
-      <value></value>
+      <key>color10</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>label10</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(10, 10)</value>
+      <key>marker10</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>style10</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_time_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_time_sink_x_0</value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>name</key>
-      <value>""</value>
+      <key>label2</key>
+      <value></value>
     </param>
     <param>
-      <key>ylabel</key>
-      <value>Amplitude</value>
+      <key>marker2</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>yunit</key>
-      <value>""</value>
+      <key>style2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>size</key>
-      <value>100</value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>srate</key>
-      <value>samp_rate</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>grid</key>
-      <value>False</value>
+      <key>color3</key>
+      <value>"green"</value>
     </param>
     <param>
-      <key>autoscale</key>
-      <value>False</value>
+      <key>label3</key>
+      <value></value>
     </param>
     <param>
-      <key>ymin</key>
+      <key>marker3</key>
       <value>-1</value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>2</value>
+      <key>style3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>nconnections</key>
+      <key>width3</key>
       <value>1</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>entags</key>
-      <value>True</value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
-      <key>gui_hint</key>
+      <key>label4</key>
       <value></value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_AUTO</value>
-    </param>
-    <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
+      <key>marker4</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>style4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>tr_delay</key>
-      <value>0</value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>tr_chan</key>
-      <value>0</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>""</value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
     <param>
-      <key>label1</key>
+      <key>label5</key>
       <value></value>
     </param>
     <param>
-      <key>width1</key>
-      <value>1</value>
+      <key>marker5</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>style5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style1</key>
+      <key>width5</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker1</key>
-      <value>-1</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
     <param>
-      <key>label2</key>
+      <key>label6</key>
       <value></value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>marker6</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>style6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style2</key>
+      <key>width6</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker2</key>
-      <value>-1</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
-      <key>label3</key>
+      <key>label7</key>
       <value></value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>marker7</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>style7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style3</key>
+      <key>width7</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker3</key>
-      <value>-1</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
     <param>
-      <key>label4</key>
+      <key>label8</key>
       <value></value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>marker8</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>style8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style4</key>
+      <key>width8</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker4</key>
-      <value>-1</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
     <param>
-      <key>label5</key>
+      <key>label9</key>
       <value></value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>marker9</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>style9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style5</key>
+      <key>width9</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker5</key>
-      <value>-1</value>
+      <key>name</key>
+      <value>""</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label6</key>
-      <value></value>
+      <key>size</key>
+      <value>100</value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>srate</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style6</key>
-      <value>1</value>
+      <key>tr_delay</key>
+      <value>0</value>
     </param>
     <param>
-      <key>marker6</key>
-      <value>-1</value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_AUTO</value>
     </param>
     <param>
-      <key>label7</key>
-      <value></value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>tr_tag</key>
+      <value>""</value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>style7</key>
-      <value>1</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>marker7</key>
-      <value>-1</value>
+      <key>ylabel</key>
+      <value>Amplitude</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>yunit</key>
+      <value>""</value>
     </param>
     <param>
-      <key>label8</key>
-      <value></value>
+      <key>ymax</key>
+      <value>2</value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>ymin</key>
+      <value>-1</value>
     </param>
+  </block>
+  <block>
+    <key>zeromq_pull_source</key>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>address</key>
+      <value>tcp://127.0.0.1:5555</value>
     </param>
     <param>
-      <key>style8</key>
-      <value>1</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>marker8</key>
-      <value>-1</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>label9</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>_coordinate</key>
+      <value>(160, 307)</value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style9</key>
-      <value>1</value>
+      <key>id</key>
+      <value>zeromq_pull_source_0</value>
     </param>
     <param>
-      <key>marker9</key>
-      <value>-1</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label10</key>
-      <value></value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width10</key>
-      <value>1</value>
+      <key>pass_tags</key>
+      <value>False</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"blue"</value>
+      <key>timeout</key>
+      <value>100</value>
     </param>
     <param>
-      <key>style10</key>
+      <key>vlen</key>
       <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>zeromq_push_sink</key>
     <param>
-      <key>marker10</key>
-      <value>-1</value>
+      <key>address</key>
+      <value>tcp://127.0.0.1:5555</value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
@@ -736,19 +765,43 @@
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(381, 300)</value>
+      <value>(722, 141)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
+    <param>
+      <key>id</key>
+      <value>zeromq_push_sink_0</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>complex</value>
+    </param>
+    <param>
+      <key>pass_tags</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>timeout</key>
+      <value>100</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
+    </param>
   </block>
   <connection>
-    <source_block_id>blocks_throttle_0</source_block_id>
-    <sink_block_id>zeromq_push_sink_0</sink_block_id>
+    <source_block_id>analog_fastnoise_source_x_0</source_block_id>
+    <sink_block_id>blocks_add_xx_0</sink_block_id>
     <source_key>0</source_key>
-    <sink_key>0</sink_key>
+    <sink_key>1</sink_key>
   </connection>
   <connection>
     <source_block_id>analog_sig_source_x_0</source_block_id>
@@ -757,14 +810,14 @@
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>analog_fastnoise_source_x_0</source_block_id>
-    <sink_block_id>blocks_add_xx_0</sink_block_id>
+    <source_block_id>blocks_add_xx_0</source_block_id>
+    <sink_block_id>blocks_throttle_0</sink_block_id>
     <source_key>0</source_key>
-    <sink_key>1</sink_key>
+    <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_add_xx_0</source_block_id>
-    <sink_block_id>blocks_throttle_0</sink_block_id>
+    <source_block_id>blocks_throttle_0</source_block_id>
+    <sink_block_id>zeromq_push_sink_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
diff --git a/gr-zeromq/examples/zeromq_reqrep.grc 
b/gr-zeromq/examples/zeromq_reqrep.grc
index 6c299dd..d210f74 100644
--- a/gr-zeromq/examples/zeromq_reqrep.grc
+++ b/gr-zeromq/examples/zeromq_reqrep.grc
@@ -1,84 +1,89 @@
-<?xml version='1.0' encoding='ASCII'?>
+<?xml version='1.0' encoding='utf-8'?>
+<?grc format='1' created='3.7.8rc1'?>
 <flow_graph>
   <timestamp>Mon Jul 14 14:45:22 2014</timestamp>
   <block>
-    <key>analog_sig_source_x</key>
+    <key>options</key>
     <param>
-      <key>id</key>
-      <value>analog_sig_source_x_0</value>
+      <key>author</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>window_size</key>
+      <value>1280, 1024</value>
     </param>
     <param>
-      <key>samp_rate</key>
-      <value>samp_rate</value>
+      <key>category</key>
+      <value>Custom</value>
     </param>
     <param>
-      <key>waveform</key>
-      <value>analog.GR_TRI_WAVE</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>freq</key>
-      <value>2000</value>
+      <key>description</key>
+      <value></value>
     </param>
     <param>
-      <key>amp</key>
-      <value>1</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>offset</key>
+      <key>_coordinate</key>
+      <value>(10, 10)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>generate_options</key>
+      <value>qt_gui</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>id</key>
+      <value>zeromq_reqrep</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>max_nouts</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>realtime_scheduling</key>
+      <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(170, 78)</value>
+      <key>run_options</key>
+      <value>prompt</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>run</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>thread_safe_setters</key>
+      <value></value>
+    </param>
+    <param>
+      <key>title</key>
+      <value></value>
     </param>
   </block>
   <block>
     <key>variable</key>
     <param>
-      <key>id</key>
-      <value>samp_rate</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>value</key>
-      <value>32000</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
       <key>_coordinate</key>
       <value>(10, 170)</value>
     </param>
@@ -86,133 +91,145 @@
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_add_xx</key>
     <param>
       <key>id</key>
-      <value>blocks_add_xx_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>num_inputs</key>
-      <value>2</value>
+      <key>value</key>
+      <value>32000</value>
     </param>
+  </block>
+  <block>
+    <key>analog_fastnoise_source_x</key>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>amp</key>
+      <value>0.1</value>
     </param>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(411, 151)</value>
+      <value>(169, 196)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_throttle</key>
     <param>
       <key>id</key>
-      <value>blocks_throttle_0</value>
+      <value>analog_fastnoise_source_x_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>noise_type</key>
+      <value>analog.GR_GAUSSIAN</value>
     </param>
     <param>
       <key>type</key>
       <value>complex</value>
     </param>
     <param>
-      <key>samples_per_second</key>
-      <value>samp_rate</value>
+      <key>seed</key>
+      <value>0</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>samples</key>
+      <value>8192</value>
     </param>
+  </block>
+  <block>
+    <key>analog_sig_source_x</key>
     <param>
-      <key>ignoretag</key>
-      <value>True</value>
+      <key>amp</key>
+      <value>1</value>
     </param>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>freq</key>
+      <value>2000</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(534, 164)</value>
+      <value>(170, 78)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>zeromq_rep_sink</key>
     <param>
       <key>id</key>
-      <value>zeromq_rep_sink_0</value>
+      <value>analog_sig_source_x_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>offset</key>
+      <value>0</value>
     </param>
     <param>
       <key>type</key>
       <value>complex</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>samp_rate</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>address</key>
-      <value>tcp://127.0.0.1:5555</value>
+      <key>waveform</key>
+      <value>analog.GR_TRI_WAVE</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_add_xx</key>
     <param>
-      <key>timeout</key>
-      <value>100</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
@@ -220,541 +237,577 @@
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(722, 148)</value>
+      <value>(411, 151)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>analog_fastnoise_source_x</key>
     <param>
       <key>id</key>
-      <value>analog_fastnoise_source_x_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>blocks_add_xx_0</value>
     </param>
     <param>
       <key>type</key>
       <value>complex</value>
     </param>
     <param>
-      <key>noise_type</key>
-      <value>analog.GR_GAUSSIAN</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>amp</key>
-      <value>0.1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>seed</key>
-      <value>0</value>
+      <key>num_inputs</key>
+      <value>2</value>
     </param>
     <param>
-      <key>samples</key>
-      <value>8192</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_throttle</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(169, 196)</value>
+      <value>(534, 164)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>zeromq_req_source</key>
     <param>
       <key>id</key>
-      <value>zeromq_req_source_0</value>
+      <value>blocks_throttle_0</value>
     </param>
     <param>
-      <key>_enabled</key>
+      <key>ignoretag</key>
       <value>True</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>address</key>
-      <value>tcp://127.0.0.1:5555</value>
+      <key>samples_per_second</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>timeout</key>
-      <value>100</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_time_sink_x</key>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(171, 306)</value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>options</key>
     <param>
-      <key>id</key>
-      <value>zeromq_reqrep</value>
+      <key>entags</key>
+      <value>True</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>title</key>
-      <value></value>
-    </param>
-    <param>
-      <key>author</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(392, 307)</value>
     </param>
     <param>
-      <key>description</key>
+      <key>gui_hint</key>
       <value></value>
     </param>
     <param>
-      <key>window_size</key>
-      <value>1280, 1024</value>
-    </param>
-    <param>
-      <key>generate_options</key>
-      <value>qt_gui</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>category</key>
-      <value>Custom</value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>run_options</key>
-      <value>prompt</value>
+      <key>id</key>
+      <value>qtgui_time_sink_x_0</value>
     </param>
     <param>
-      <key>run</key>
-      <value>True</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>max_nouts</key>
-      <value>0</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>realtime_scheduling</key>
-      <value></value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>label1</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(10, 10)</value>
+      <key>marker1</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>style1</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_time_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_time_sink_x_0</value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>color10</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>name</key>
-      <value>""</value>
+      <key>label10</key>
+      <value></value>
     </param>
     <param>
-      <key>ylabel</key>
-      <value>Amplitude</value>
+      <key>marker10</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>yunit</key>
-      <value>""</value>
+      <key>style10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>size</key>
-      <value>100</value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>srate</key>
-      <value>samp_rate</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>grid</key>
-      <value>False</value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>autoscale</key>
-      <value>False</value>
+      <key>label2</key>
+      <value></value>
     </param>
     <param>
-      <key>ymin</key>
+      <key>marker2</key>
       <value>-1</value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>2</value>
+      <key>style2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>nconnections</key>
+      <key>width2</key>
       <value>1</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>entags</key>
-      <value>True</value>
+      <key>color3</key>
+      <value>"green"</value>
     </param>
     <param>
-      <key>gui_hint</key>
+      <key>label3</key>
       <value></value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_AUTO</value>
-    </param>
-    <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
+      <key>marker3</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>style3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>tr_delay</key>
-      <value>0</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>tr_chan</key>
-      <value>0</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>""</value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
-      <key>label1</key>
+      <key>label4</key>
       <value></value>
     </param>
     <param>
-      <key>width1</key>
-      <value>1</value>
+      <key>marker4</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>style4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style1</key>
+      <key>width4</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker1</key>
-      <value>-1</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
     <param>
-      <key>label2</key>
+      <key>label5</key>
       <value></value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>marker5</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>style5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style2</key>
+      <key>width5</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker2</key>
-      <value>-1</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
     <param>
-      <key>label3</key>
+      <key>label6</key>
       <value></value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>marker6</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>style6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style3</key>
+      <key>width6</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker3</key>
-      <value>-1</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
-      <key>label4</key>
+      <key>label7</key>
       <value></value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>marker7</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>style7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style4</key>
+      <key>width7</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker4</key>
-      <value>-1</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
     <param>
-      <key>label5</key>
+      <key>label8</key>
       <value></value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>marker8</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>style8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style5</key>
+      <key>width8</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker5</key>
-      <value>-1</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
     <param>
-      <key>label6</key>
+      <key>label9</key>
       <value></value>
     </param>
     <param>
-      <key>width6</key>
+      <key>marker9</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style9</key>
       <value>1</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
+      <key>width9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style6</key>
+      <key>name</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>nconnections</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker6</key>
-      <value>-1</value>
+      <key>size</key>
+      <value>100</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>srate</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>label7</key>
-      <value></value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>tr_delay</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>style7</key>
-      <value>1</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_AUTO</value>
     </param>
     <param>
-      <key>marker7</key>
-      <value>-1</value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>tr_tag</key>
+      <value>""</value>
     </param>
     <param>
-      <key>label8</key>
-      <value></value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>ylabel</key>
+      <value>Amplitude</value>
     </param>
     <param>
-      <key>style8</key>
-      <value>1</value>
+      <key>yunit</key>
+      <value>""</value>
     </param>
     <param>
-      <key>marker8</key>
+      <key>ymax</key>
+      <value>2</value>
+    </param>
+    <param>
+      <key>ymin</key>
       <value>-1</value>
     </param>
+  </block>
+  <block>
+    <key>zeromq_rep_sink</key>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>address</key>
+      <value>tcp://127.0.0.1:5555</value>
     </param>
     <param>
-      <key>label9</key>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>style9</key>
-      <value>1</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>marker9</key>
-      <value>-1</value>
+      <key>_coordinate</key>
+      <value>(722, 148)</value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label10</key>
-      <value></value>
+      <key>id</key>
+      <value>zeromq_rep_sink_0</value>
     </param>
     <param>
-      <key>width10</key>
-      <value>1</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"blue"</value>
+      <key>pass_tags</key>
+      <value>False</value>
     </param>
     <param>
-      <key>style10</key>
-      <value>1</value>
+      <key>timeout</key>
+      <value>100</value>
     </param>
     <param>
-      <key>marker10</key>
-      <value>-1</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>zeromq_req_source</key>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>address</key>
+      <value>tcp://127.0.0.1:5555</value>
     </param>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(385, 298)</value>
+      <value>(168, 307)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
+    <param>
+      <key>id</key>
+      <value>zeromq_req_source_0</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>complex</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>pass_tags</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>timeout</key>
+      <value>100</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
+    </param>
   </block>
   <connection>
-    <source_block_id>analog_sig_source_x_0</source_block_id>
+    <source_block_id>analog_fastnoise_source_x_0</source_block_id>
     <sink_block_id>blocks_add_xx_0</sink_block_id>
     <source_key>0</source_key>
-    <sink_key>0</sink_key>
+    <sink_key>1</sink_key>
   </connection>
   <connection>
-    <source_block_id>analog_fastnoise_source_x_0</source_block_id>
+    <source_block_id>analog_sig_source_x_0</source_block_id>
     <sink_block_id>blocks_add_xx_0</sink_block_id>
     <source_key>0</source_key>
-    <sink_key>1</sink_key>
+    <sink_key>0</sink_key>
   </connection>
   <connection>
     <source_block_id>blocks_add_xx_0</source_block_id>
diff --git a/gr-zeromq/examples/zmq_stream.grc 
b/gr-zeromq/examples/zmq_stream.grc
index fd3b10e..fe3314c 100644
--- a/gr-zeromq/examples/zmq_stream.grc
+++ b/gr-zeromq/examples/zmq_stream.grc
@@ -1,23 +1,27 @@
-<?xml version='1.0' encoding='ASCII'?>
-<?grc format='1' created='3.7.7'?>
+<?xml version='1.0' encoding='utf-8'?>
+<?grc format='1' created='3.7.8rc1'?>
 <flow_graph>
   <timestamp>Mon Jan 12 13:10:48 2015</timestamp>
   <block>
     <key>options</key>
     <param>
-      <key>id</key>
-      <value>zmq_stream</value>
+      <key>author</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>title</key>
-      <value></value>
+      <key>window_size</key>
+      <value>1280, 1024</value>
     </param>
     <param>
-      <key>author</key>
+      <key>category</key>
+      <value>Custom</value>
+    </param>
+    <param>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
@@ -25,24 +29,24 @@
       <value></value>
     </param>
     <param>
-      <key>window_size</key>
-      <value>1280, 1024</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>generate_options</key>
-      <value>qt_gui</value>
+      <key>_coordinate</key>
+      <value>(16, 11)</value>
     </param>
     <param>
-      <key>category</key>
-      <value>Custom</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>run_options</key>
-      <value>prompt</value>
+      <key>generate_options</key>
+      <value>qt_gui</value>
     </param>
     <param>
-      <key>run</key>
-      <value>True</value>
+      <key>id</key>
+      <value>zmq_stream</value>
     </param>
     <param>
       <key>max_nouts</key>
@@ -53,37 +57,33 @@
       <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>run_options</key>
+      <value>prompt</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(16, 11)</value>
+      <key>run</key>
+      <value>True</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>thread_safe_setters</key>
+      <value></value>
+    </param>
+    <param>
+      <key>title</key>
+      <value></value>
     </param>
   </block>
   <block>
     <key>variable</key>
     <param>
-      <key>id</key>
-      <value>samp_rate</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>value</key>
-      <value>100e3</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
       <key>_coordinate</key>
       <value>(16, 115)</value>
     </param>
@@ -91,783 +91,816 @@
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>zeromq_rep_sink</key>
     <param>
       <key>id</key>
-      <value>zeromq_rep_sink_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>type</key>
-      <value>float</value>
+      <key>value</key>
+      <value>100e3</value>
     </param>
+  </block>
+  <block>
+    <key>analog_sig_source_x</key>
     <param>
-      <key>vlen</key>
+      <key>amp</key>
       <value>1</value>
     </param>
     <param>
-      <key>address</key>
-      <value>tcp://127.0.0.1:5557</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>timeout</key>
-      <value>100</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>pass_tags</key>
-      <value>True</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>freq</key>
+      <value>1000</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(584, 323)</value>
+      <value>(184, 123)</value>
     </param>
     <param>
       <key>_rotation</key>
-      <value>0</value>
+      <value>180</value>
     </param>
-  </block>
-  <block>
-    <key>zeromq_pub_sink</key>
     <param>
       <key>id</key>
-      <value>zeromq_pub_sink_0</value>
+      <value>analog_sig_source_x_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>float</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>offset</key>
+      <value>0</value>
     </param>
     <param>
-      <key>address</key>
-      <value>tcp://127.0.0.1:5555</value>
+      <key>type</key>
+      <value>float</value>
     </param>
     <param>
-      <key>timeout</key>
-      <value>100</value>
+      <key>samp_rate</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>pass_tags</key>
-      <value>True</value>
+      <key>waveform</key>
+      <value>analog.GR_COS_WAVE</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_stream_to_tagged_stream</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(584, 131)</value>
+      <value>(352, 235)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>zeromq_push_sink</key>
     <param>
       <key>id</key>
-      <value>zeromq_push_sink_0</value>
+      <value>blocks_stream_to_tagged_stream_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>len_tag_key</key>
+      <value>"packet_len"</value>
     </param>
     <param>
-      <key>type</key>
-      <value>float</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>address</key>
-      <value>tcp://127.0.0.1:5556</value>
+      <key>packet_len</key>
+      <value>1000</value>
     </param>
     <param>
-      <key>timeout</key>
-      <value>100</value>
+      <key>type</key>
+      <value>float</value>
     </param>
     <param>
-      <key>pass_tags</key>
-      <value>True</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_throttle</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(584, 227)</value>
+      <value>(184, 243)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_throttle</key>
     <param>
       <key>id</key>
       <value>blocks_throttle_0</value>
     </param>
     <param>
-      <key>_enabled</key>
+      <key>ignoretag</key>
       <value>True</value>
     </param>
     <param>
-      <key>type</key>
-      <value>float</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
       <key>samples_per_second</key>
       <value>samp_rate</value>
     </param>
     <param>
+      <key>type</key>
+      <value>float</value>
+    </param>
+    <param>
       <key>vlen</key>
       <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_freq_sink_x</key>
     <param>
-      <key>ignoretag</key>
-      <value>True</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>average</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>bw</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>fc</key>
       <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(184, 243)</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_stream_to_tagged_stream</key>
     <param>
-      <key>id</key>
-      <value>blocks_stream_to_tagged_stream_0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>type</key>
-      <value>float</value>
+      <key>fftsize</key>
+      <value>1024</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>_coordinate</key>
+      <value>(992, 27)</value>
     </param>
     <param>
-      <key>packet_len</key>
-      <value>1000</value>
+      <key>gui_hint</key>
+      <value>1,0,1,3</value>
     </param>
     <param>
-      <key>len_tag_key</key>
-      <value>"packet_len"</value>
+      <key>_rotation</key>
+      <value>180</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>id</key>
+      <value>qtgui_freq_sink_x_0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(352, 235)</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
-  </block>
-  <block>
-    <key>analog_sig_source_x</key>
     <param>
-      <key>id</key>
-      <value>analog_sig_source_x_0</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label1</key>
+      <value></value>
     </param>
     <param>
-      <key>type</key>
-      <value>float</value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>samp_rate</key>
-      <value>samp_rate</value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>waveform</key>
-      <value>analog.GR_COS_WAVE</value>
+      <key>color10</key>
+      <value>"dark blue"</value>
     </param>
     <param>
-      <key>freq</key>
-      <value>1000</value>
+      <key>label10</key>
+      <value></value>
     </param>
     <param>
-      <key>amp</key>
+      <key>width10</key>
       <value>1</value>
     </param>
     <param>
-      <key>offset</key>
-      <value>0</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>label2</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(184, 123)</value>
+      <key>color3</key>
+      <value>"green"</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>180</value>
+      <key>label3</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>zeromq_sub_source</key>
     <param>
-      <key>id</key>
-      <value>zeromq_sub_source_0</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>float</value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>label4</key>
+      <value></value>
     </param>
     <param>
-      <key>address</key>
-      <value>tcp://127.0.0.1:5555</value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>timeout</key>
-      <value>100</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>pass_tags</key>
-      <value>True</value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>label5</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(760, 131)</value>
+      <key>label6</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>width6</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>zeromq_req_source</key>
     <param>
-      <key>id</key>
-      <value>zeromq_req_source_0</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
-      <key>type</key>
-      <value>float</value>
+      <key>label7</key>
+      <value></value>
     </param>
     <param>
-      <key>vlen</key>
+      <key>width7</key>
       <value>1</value>
     </param>
     <param>
-      <key>address</key>
-      <value>tcp://127.0.0.1:5557</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>timeout</key>
-      <value>100</value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
     <param>
-      <key>pass_tags</key>
-      <value>True</value>
+      <key>label8</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>width8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>alpha9</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color9</key>
+      <value>"dark green"</value>
+    </param>
+    <param>
+      <key>label9</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>width9</key>
+      <value>1</value>
     </param>
     <param>
       <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(760, 323)</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>name</key>
+      <value>""</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_time_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_time_sink_x_0_0</value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
+      <key>showports</key>
       <value>True</value>
     </param>
     <param>
-      <key>type</key>
-      <value>float</value>
+      <key>freqhalf</key>
+      <value>False</value>
     </param>
     <param>
-      <key>name</key>
-      <value>"PUB/SUB"</value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ylabel</key>
-      <value>Amplitude</value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>yunit</key>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
+    </param>
+    <param>
+      <key>tr_tag</key>
       <value>""</value>
     </param>
     <param>
-      <key>size</key>
-      <value>1024</value>
+      <key>type</key>
+      <value>float</value>
     </param>
     <param>
-      <key>srate</key>
-      <value>samp_rate</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>grid</key>
-      <value>False</value>
+      <key>wintype</key>
+      <value>firdes.WIN_BLACKMAN_hARRIS</value>
+    </param>
+    <param>
+      <key>ymax</key>
+      <value>10</value>
     </param>
     <param>
+      <key>ymin</key>
+      <value>-140</value>
+    </param>
+  </block>
+  <block>
+    <key>qtgui_time_sink_x</key>
+    <param>
       <key>autoscale</key>
       <value>False</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-1</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>1</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>nconnections</key>
-      <value>1</value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
       <key>entags</key>
       <value>True</value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(992, 219)</value>
+    </param>
+    <param>
       <key>gui_hint</key>
-      <value>0,0,1,1</value>
+      <value>0,1,1,1</value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_TAG</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>id</key>
+      <value>qtgui_time_sink_x_0</value>
     </param>
     <param>
-      <key>tr_delay</key>
-      <value>0</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>tr_chan</key>
-      <value>0</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>"packet_len"</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
       <key>label1</key>
       <value></value>
     </param>
     <param>
+      <key>marker1</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style1</key>
+      <value>1</value>
+    </param>
+    <param>
       <key>width1</key>
       <value>1</value>
     </param>
     <param>
-      <key>color1</key>
+      <key>alpha10</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color10</key>
       <value>"blue"</value>
     </param>
     <param>
-      <key>style1</key>
-      <value>1</value>
+      <key>label10</key>
+      <value></value>
     </param>
     <param>
-      <key>marker1</key>
+      <key>marker10</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>style10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label2</key>
-      <value></value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color2</key>
       <value>"red"</value>
     </param>
     <param>
-      <key>style2</key>
-      <value>1</value>
+      <key>label2</key>
+      <value></value>
     </param>
     <param>
       <key>marker2</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>style2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label3</key>
-      <value></value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color3</key>
       <value>"green"</value>
     </param>
     <param>
-      <key>style3</key>
-      <value>1</value>
+      <key>label3</key>
+      <value></value>
     </param>
     <param>
       <key>marker3</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>style3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label4</key>
-      <value></value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color4</key>
       <value>"black"</value>
     </param>
     <param>
-      <key>style4</key>
-      <value>1</value>
+      <key>label4</key>
+      <value></value>
     </param>
     <param>
       <key>marker4</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>style4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label5</key>
-      <value></value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color5</key>
       <value>"cyan"</value>
     </param>
     <param>
-      <key>style5</key>
-      <value>1</value>
+      <key>label5</key>
+      <value></value>
     </param>
     <param>
       <key>marker5</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>style5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label6</key>
-      <value></value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color6</key>
       <value>"magenta"</value>
     </param>
     <param>
-      <key>style6</key>
-      <value>1</value>
+      <key>label6</key>
+      <value></value>
     </param>
     <param>
       <key>marker6</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>style6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label7</key>
-      <value></value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color7</key>
       <value>"yellow"</value>
     </param>
     <param>
-      <key>style7</key>
-      <value>1</value>
+      <key>label7</key>
+      <value></value>
     </param>
     <param>
       <key>marker7</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>style7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label8</key>
-      <value></value>
+      <key>width7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color8</key>
       <value>"dark red"</value>
     </param>
     <param>
-      <key>style8</key>
-      <value>1</value>
+      <key>label8</key>
+      <value></value>
     </param>
     <param>
       <key>marker8</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>style8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label9</key>
-      <value></value>
+      <key>width8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color9</key>
       <value>"dark green"</value>
     </param>
     <param>
-      <key>style9</key>
-      <value>1</value>
+      <key>label9</key>
+      <value></value>
     </param>
     <param>
       <key>marker9</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value></value>
+      <key>style9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width10</key>
+      <key>width9</key>
       <value>1</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"blue"</value>
+      <key>name</key>
+      <value>"PUSH/PULL"</value>
     </param>
     <param>
-      <key>style10</key>
+      <key>nconnections</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker10</key>
-      <value>-1</value>
+      <key>size</key>
+      <value>1024</value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>srate</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>tr_delay</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(992, 123)</value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_TAG</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_time_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_time_sink_x_0</value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>tr_tag</key>
+      <value>"packet_len"</value>
     </param>
     <param>
       <key>type</key>
       <value>float</value>
     </param>
     <param>
-      <key>name</key>
-      <value>"PUSH/PULL"</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
       <key>ylabel</key>
@@ -878,343 +911,355 @@
       <value>""</value>
     </param>
     <param>
-      <key>size</key>
-      <value>1024</value>
-    </param>
-    <param>
-      <key>srate</key>
-      <value>samp_rate</value>
+      <key>ymax</key>
+      <value>1</value>
     </param>
     <param>
-      <key>grid</key>
-      <value>False</value>
+      <key>ymin</key>
+      <value>-1</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_time_sink_x</key>
     <param>
       <key>autoscale</key>
       <value>False</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-1</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>1</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>nconnections</key>
-      <value>1</value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
       <key>entags</key>
       <value>True</value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(992, 123)</value>
+    </param>
+    <param>
       <key>gui_hint</key>
-      <value>0,1,1,1</value>
+      <value>0,0,1,1</value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_TAG</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>id</key>
+      <value>qtgui_time_sink_x_0_0</value>
     </param>
     <param>
-      <key>tr_delay</key>
-      <value>0</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>tr_chan</key>
-      <value>0</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>"packet_len"</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
       <key>label1</key>
       <value></value>
     </param>
     <param>
+      <key>marker1</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style1</key>
+      <value>1</value>
+    </param>
+    <param>
       <key>width1</key>
       <value>1</value>
     </param>
     <param>
-      <key>color1</key>
+      <key>alpha10</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color10</key>
       <value>"blue"</value>
     </param>
     <param>
-      <key>style1</key>
-      <value>1</value>
+      <key>label10</key>
+      <value></value>
     </param>
     <param>
-      <key>marker1</key>
+      <key>marker10</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>style10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label2</key>
-      <value></value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color2</key>
       <value>"red"</value>
     </param>
     <param>
-      <key>style2</key>
-      <value>1</value>
+      <key>label2</key>
+      <value></value>
     </param>
     <param>
       <key>marker2</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>style2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label3</key>
-      <value></value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color3</key>
       <value>"green"</value>
     </param>
     <param>
-      <key>style3</key>
-      <value>1</value>
+      <key>label3</key>
+      <value></value>
     </param>
     <param>
       <key>marker3</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>style3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label4</key>
-      <value></value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color4</key>
       <value>"black"</value>
     </param>
     <param>
-      <key>style4</key>
-      <value>1</value>
+      <key>label4</key>
+      <value></value>
     </param>
     <param>
       <key>marker4</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>style4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label5</key>
-      <value></value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color5</key>
       <value>"cyan"</value>
     </param>
     <param>
-      <key>style5</key>
-      <value>1</value>
+      <key>label5</key>
+      <value></value>
     </param>
     <param>
       <key>marker5</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>style5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label6</key>
-      <value></value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color6</key>
       <value>"magenta"</value>
     </param>
     <param>
-      <key>style6</key>
-      <value>1</value>
+      <key>label6</key>
+      <value></value>
     </param>
     <param>
       <key>marker6</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>style6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label7</key>
-      <value></value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color7</key>
       <value>"yellow"</value>
     </param>
     <param>
-      <key>style7</key>
-      <value>1</value>
+      <key>label7</key>
+      <value></value>
     </param>
     <param>
       <key>marker7</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>style7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label8</key>
-      <value></value>
+      <key>width7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color8</key>
       <value>"dark red"</value>
     </param>
     <param>
-      <key>style8</key>
-      <value>1</value>
+      <key>label8</key>
+      <value></value>
     </param>
     <param>
       <key>marker8</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>style8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label9</key>
-      <value></value>
+      <key>width8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color9</key>
       <value>"dark green"</value>
     </param>
     <param>
-      <key>style9</key>
-      <value>1</value>
+      <key>label9</key>
+      <value></value>
     </param>
     <param>
       <key>marker9</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value></value>
+      <key>style9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width10</key>
+      <key>width9</key>
       <value>1</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"blue"</value>
+      <key>name</key>
+      <value>"PUB/SUB"</value>
     </param>
     <param>
-      <key>style10</key>
+      <key>nconnections</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker10</key>
-      <value>-1</value>
+      <key>size</key>
+      <value>1024</value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>srate</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>tr_delay</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(992, 219)</value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_TAG</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_time_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_time_sink_x_0_1</value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>tr_tag</key>
+      <value>"packet_len"</value>
     </param>
     <param>
       <key>type</key>
       <value>float</value>
     </param>
     <param>
-      <key>name</key>
-      <value>"REQ/REP"</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
       <key>ylabel</key>
@@ -1225,707 +1270,754 @@
       <value>""</value>
     </param>
     <param>
-      <key>size</key>
-      <value>1024</value>
-    </param>
-    <param>
-      <key>srate</key>
-      <value>samp_rate</value>
+      <key>ymax</key>
+      <value>1</value>
     </param>
     <param>
-      <key>grid</key>
-      <value>False</value>
+      <key>ymin</key>
+      <value>-1</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_time_sink_x</key>
     <param>
       <key>autoscale</key>
       <value>False</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-1</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>1</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>nconnections</key>
-      <value>1</value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
       <key>entags</key>
       <value>True</value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(992, 315)</value>
+    </param>
+    <param>
       <key>gui_hint</key>
       <value>0,2,1,1</value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_TAG</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>id</key>
+      <value>qtgui_time_sink_x_0_1</value>
     </param>
     <param>
-      <key>tr_delay</key>
-      <value>0</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>tr_chan</key>
-      <value>0</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>"packet_len"</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
       <key>label1</key>
       <value></value>
     </param>
     <param>
+      <key>marker1</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style1</key>
+      <value>1</value>
+    </param>
+    <param>
       <key>width1</key>
       <value>1</value>
     </param>
     <param>
-      <key>color1</key>
+      <key>alpha10</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color10</key>
       <value>"blue"</value>
     </param>
     <param>
-      <key>style1</key>
-      <value>1</value>
+      <key>label10</key>
+      <value></value>
     </param>
     <param>
-      <key>marker1</key>
+      <key>marker10</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>style10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label2</key>
-      <value></value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color2</key>
       <value>"red"</value>
     </param>
     <param>
-      <key>style2</key>
-      <value>1</value>
+      <key>label2</key>
+      <value></value>
     </param>
     <param>
       <key>marker2</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>style2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label3</key>
-      <value></value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color3</key>
       <value>"green"</value>
     </param>
     <param>
-      <key>style3</key>
-      <value>1</value>
+      <key>label3</key>
+      <value></value>
     </param>
     <param>
       <key>marker3</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>style3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label4</key>
-      <value></value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color4</key>
       <value>"black"</value>
     </param>
     <param>
-      <key>style4</key>
-      <value>1</value>
+      <key>label4</key>
+      <value></value>
     </param>
     <param>
       <key>marker4</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>style4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label5</key>
-      <value></value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color5</key>
       <value>"cyan"</value>
     </param>
     <param>
-      <key>style5</key>
-      <value>1</value>
+      <key>label5</key>
+      <value></value>
     </param>
     <param>
       <key>marker5</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>style5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label6</key>
-      <value></value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color6</key>
       <value>"magenta"</value>
     </param>
     <param>
-      <key>style6</key>
-      <value>1</value>
+      <key>label6</key>
+      <value></value>
     </param>
     <param>
       <key>marker6</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>style6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label7</key>
-      <value></value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color7</key>
       <value>"yellow"</value>
     </param>
     <param>
-      <key>style7</key>
-      <value>1</value>
+      <key>label7</key>
+      <value></value>
     </param>
     <param>
       <key>marker7</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>style7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label8</key>
-      <value></value>
+      <key>width7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color8</key>
       <value>"dark red"</value>
     </param>
     <param>
-      <key>style8</key>
-      <value>1</value>
+      <key>label8</key>
+      <value></value>
     </param>
     <param>
       <key>marker8</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>style8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label9</key>
-      <value></value>
+      <key>width8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color9</key>
       <value>"dark green"</value>
     </param>
     <param>
-      <key>style9</key>
-      <value>1</value>
+      <key>label9</key>
+      <value></value>
     </param>
     <param>
       <key>marker9</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value></value>
+      <key>style9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width10</key>
+      <key>width9</key>
       <value>1</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"blue"</value>
+      <key>name</key>
+      <value>"REQ/REP"</value>
     </param>
     <param>
-      <key>style10</key>
+      <key>nconnections</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker10</key>
-      <value>-1</value>
+      <key>size</key>
+      <value>1024</value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>srate</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>tr_delay</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(992, 315)</value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_TAG</value>
     </param>
-  </block>
-  <block>
-    <key>zeromq_pull_source</key>
     <param>
-      <key>id</key>
-      <value>zeromq_pull_source_0</value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>tr_tag</key>
+      <value>"packet_len"</value>
     </param>
     <param>
       <key>type</key>
       <value>float</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>address</key>
-      <value>tcp://127.0.0.1:5556</value>
+      <key>ylabel</key>
+      <value>Amplitude</value>
     </param>
     <param>
-      <key>timeout</key>
-      <value>100</value>
+      <key>yunit</key>
+      <value>""</value>
     </param>
     <param>
-      <key>pass_tags</key>
-      <value>True</value>
+      <key>ymax</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>ymin</key>
+      <value>-1</value>
+    </param>
+  </block>
+  <block>
+    <key>zeromq_pub_sink</key>
+    <param>
+      <key>address</key>
+      <value>tcp://127.0.0.1:5555</value>
     </param>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(760, 227)</value>
+      <value>(584, 131)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_freq_sink_x</key>
     <param>
       <key>id</key>
-      <value>qtgui_freq_sink_x_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>zeromq_pub_sink_0</value>
     </param>
     <param>
       <key>type</key>
       <value>float</value>
     </param>
     <param>
-      <key>name</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>fftsize</key>
-      <value>1024</value>
-    </param>
-    <param>
-      <key>freqhalf</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>wintype</key>
-      <value>firdes.WIN_BLACKMAN_hARRIS</value>
-    </param>
-    <param>
-      <key>fc</key>
-      <value>0</value>
+      <key>pass_tags</key>
+      <value>True</value>
     </param>
     <param>
-      <key>bw</key>
-      <value>samp_rate</value>
+      <key>timeout</key>
+      <value>100</value>
     </param>
     <param>
-      <key>grid</key>
-      <value>False</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>zeromq_pull_source</key>
     <param>
-      <key>autoscale</key>
-      <value>False</value>
+      <key>address</key>
+      <value>tcp://127.0.0.1:5556</value>
     </param>
     <param>
-      <key>average</key>
-      <value>1.0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-140</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>10</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>nconnections</key>
-      <value>1</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>_coordinate</key>
+      <value>(760, 227)</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>1,0,1,3</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>showports</key>
-      <value>True</value>
+      <key>id</key>
+      <value>zeromq_pull_source_0</value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
+      <key>type</key>
+      <value>float</value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>tr_chan</key>
+      <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>""</value>
+      <key>pass_tags</key>
+      <value>True</value>
     </param>
     <param>
-      <key>label1</key>
-      <value></value>
+      <key>timeout</key>
+      <value>100</value>
     </param>
     <param>
-      <key>width1</key>
+      <key>vlen</key>
       <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>zeromq_push_sink</key>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>address</key>
+      <value>tcp://127.0.0.1:5556</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>label2</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>_coordinate</key>
+      <value>(584, 227)</value>
     </param>
     <param>
-      <key>label3</key>
-      <value></value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>id</key>
+      <value>zeromq_push_sink_0</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>type</key>
+      <value>float</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>pass_tags</key>
+      <value>True</value>
     </param>
     <param>
-      <key>label4</key>
-      <value></value>
+      <key>timeout</key>
+      <value>100</value>
     </param>
     <param>
-      <key>width4</key>
+      <key>vlen</key>
       <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>zeromq_rep_sink</key>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>address</key>
+      <value>tcp://127.0.0.1:5557</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>label5</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>_coordinate</key>
+      <value>(584, 323)</value>
     </param>
     <param>
-      <key>label6</key>
-      <value></value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>id</key>
+      <value>zeromq_rep_sink_0</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
+      <key>type</key>
+      <value>float</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>pass_tags</key>
+      <value>True</value>
     </param>
     <param>
-      <key>label7</key>
-      <value></value>
+      <key>timeout</key>
+      <value>100</value>
     </param>
     <param>
-      <key>width7</key>
+      <key>vlen</key>
       <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>zeromq_req_source</key>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>address</key>
+      <value>tcp://127.0.0.1:5557</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>label8</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>_coordinate</key>
+      <value>(760, 323)</value>
     </param>
     <param>
-      <key>label9</key>
-      <value></value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>id</key>
+      <value>zeromq_req_source_0</value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>type</key>
+      <value>float</value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label10</key>
-      <value></value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width10</key>
-      <value>1</value>
+      <key>pass_tags</key>
+      <value>True</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"dark blue"</value>
+      <key>timeout</key>
+      <value>100</value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>vlen</key>
+      <value>1</value>
+    </param>
+  </block>
+  <block>
+    <key>zeromq_sub_source</key>
+    <param>
+      <key>address</key>
+      <value>tcp://127.0.0.1:5555</value>
     </param>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(760, 131)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
+      <key>id</key>
+      <value>zeromq_sub_source_0</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>float</value>
+    </param>
+    <param>
       <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(992, 27)</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>180</value>
+      <key>pass_tags</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>timeout</key>
+      <value>100</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
     </param>
   </block>
   <connection>
-    <source_block_id>zeromq_req_source_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_0_1</sink_block_id>
+    <source_block_id>analog_sig_source_x_0</source_block_id>
+    <sink_block_id>blocks_throttle_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
     <source_block_id>blocks_stream_to_tagged_stream_0</source_block_id>
-    <sink_block_id>zeromq_rep_sink_0</sink_block_id>
+    <sink_block_id>zeromq_pub_sink_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
     <source_block_id>blocks_stream_to_tagged_stream_0</source_block_id>
-    <sink_block_id>zeromq_pub_sink_0</sink_block_id>
+    <sink_block_id>zeromq_push_sink_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
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-    <source_block_id>zeromq_sub_source_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_0_0</sink_block_id>
+    <source_block_id>blocks_stream_to_tagged_stream_0</source_block_id>
+    <sink_block_id>zeromq_rep_sink_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>zeromq_pull_source_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_0</sink_block_id>
+    <source_block_id>blocks_throttle_0</source_block_id>
+    <sink_block_id>blocks_stream_to_tagged_stream_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
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-    <source_block_id>blocks_stream_to_tagged_stream_0</source_block_id>
-    <sink_block_id>zeromq_push_sink_0</sink_block_id>
+    <source_block_id>zeromq_pull_source_0</source_block_id>
+    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_throttle_0</source_block_id>
-    <sink_block_id>blocks_stream_to_tagged_stream_0</sink_block_id>
+    <source_block_id>zeromq_pull_source_0</source_block_id>
+    <sink_block_id>qtgui_time_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>analog_sig_source_x_0</source_block_id>
-    <sink_block_id>blocks_throttle_0</sink_block_id>
+    <source_block_id>zeromq_req_source_0</source_block_id>
+    <sink_block_id>qtgui_time_sink_x_0_1</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>zeromq_pull_source_0</source_block_id>
-    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
+    <source_block_id>zeromq_sub_source_0</source_block_id>
+    <sink_block_id>qtgui_time_sink_x_0_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
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[Commit-gnuradio] [gnuradio] branch master updated (6cf003d -> 81f632c), git, 2015/08/05
- [Commit-gnuradio] [gnuradio] 01/08: Replacing center of mass interpolation for the time_est tag with parabolic interpolation. It should be more accurate although still is a biased estimate of the time delay, git, 2015/08/05
- [Commit-gnuradio] [gnuradio] 03/08: Merge branch 'maint', git, 2015/08/05
- [Commit-gnuradio] [gnuradio] 04/08: Merge remote-tracking branch 'garverp/corr_est_parabolicinterp', git, 2015/08/05
- [Commit-gnuradio] [gnuradio] 02/08: fec: Adding doxygen comments to new dummy encoder params., git, 2015/08/05
- [Commit-gnuradio] [gnuradio] 08/08: Merge remote-tracking branch 'tom/examples/qtgui_niceties', git, 2015/08/05
- [Commit-gnuradio] [gnuradio] 05/08: apps: removed title and legend from uhd_fft for more viewing space., git, 2015/08/05
- [Commit-gnuradio] [gnuradio] 07/08: Merge remote-tracking branch 'tom/fec/dummy_enc_docs', git, 2015/08/05
- [Commit-gnuradio] [gnuradio] 06/08: examples: removed extra titles or legends from QTGUI blocks in examples., git <=
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