On Wed, 2010-12-01 at 13:55 -0500, Allen Vinegar wrote:
I am getting output like the following:
(-35) Type 11 (all call reply) from ac85cc in reply to interrogator 4
(-34) Type 11 (all call reply) from ac85cc in reply to interrogator 4
(-35) Type 11 (all call reply) from ac85cc in reply to interrogator 4
(-33) Type 4 (short surveillance altitude reply) from ac85cc at 5900ft
(-33) Type 0 (short A-A surveillance) from ac85cc at 5875ft
(-34) Type 11 (all call reply) from ac85cc in reply to interrogator 0
(-34) Type 0 (short A-A surveillance) from ac85cc at 5825ft
(-34) Type 0 (short A-A surveillance) from ac85cc at 5825ft
(-34) Type 0 (short A-A surveillance) from ac85cc at 5800ft
(-33) Type 0 (short A-A surveillance) from ac85cc at 5600ft
(-33) Type 0 (short A-A surveillance) from ac85cc at 5575ft
(-36) Type 11 (all call reply) from ac85cc in reply to interrogator 0
However I can't renewed output to GoogleEarth. On occasion I get a plane
showing as in the attached file but I can't get a continually renewing
display.
Those squitters don't contain any position information. The majority
(70% or so) of Mode S-equipped aircraft do not broadcast their position
via ADS-B. ADS-B packets are type 17 and you will see lat/lon in the
text when they come up.
The default KML settings only display aircraft which were heard in the
last 5 minutes. This is to prevent old data from being displayed on
screen. You can edit modes_kml.py to change that timeout if you like.
If your display doesn't auto-renew, look at the network link settings in
Google Earth. Make sure under the "Refresh" tab the "Time-Based Refresh"
is set to "Periodically" and set the timeout to 4 or 5 seconds.
--n
Any ideas on how to fix?
Thank you,
Al Vinegar
----- Original Message -----
From: "madengr" <address@hidden>
To: <address@hidden>
Sent: Monday, November 29, 2010 11:16 PM
Subject: Re: [Discuss-gnuradio] gr-air-modes: problem with uhd and USRP1
>
> Nick,
>
> Got it working on my USRP2 by changing to line 57 to:
> self.u = uhd.single_usrp_source("addr=192.168.1.15",
> uhd.io_type_t.COMPLEX_FLOAT32)
>
> and line 119 to:
> result = self.u.set_center_freq(freq,0)
>
> I'm getting 0 aircraft locations in the KML file but the stdout is as
> follows:
>
> (-40) Type 11 (all call reply) from e9fc9f in reply to interrogator 5
> (-41) Type 11 (all call reply) from 2c4e09 in reply to interrogator 0
>
> I assume these are Mode-S packets, thus no position info?
>
>
> --
> View this message in context:
>
http://old.nabble.com/gr-air-modes%3A-problem-with-uhd-and-USRP1-tp30326133p30336873.html
> Sent from the GnuRadio mailing list archive at Nabble.com.
>
>
> _______________________________________________
> Discuss-gnuradio mailing list
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