[Discuss-gnuradio] autonotch filter with probe_signal, function_probe and band_reject_filter

[alex245]

Hello,

i'am trying to build an autonotch-filter for shortwave with GRC.
For this i'am using an "PLL Freq Det"-block, and an "Moving Average"-block.

For testing, there is a 900Hz signal added to the signal.

Behind the "Moving Average"-block is a "WX GUI Number Sink",
which show's, that the PLL has locked on the disturbing 900Hz-signal.

My attempts with "Probe Signal" and "Function Probe" dont work.
The value of fnotch in the filter does not update.

How can I use the "Function Probe"-value to update the "Band Reject Filter"?

The flowgraph is under  http://www.imalsta.de/grc/m80.grc
<http://www.imalsta.de/grc/m80.grc>  

Maybe someone can tell me, where the mistake is?

Alex




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