[op25-dev] OP25 and GRC

Sean Kealy superstardodge@yahoo.com [op25-dev] op25-dev at yahoogroups.com
Fri Mar 31 02:50:03 UTC 2017

I could not get anything out of the flow graph either , I can see a signal on fft, I was going to try using a LNA with single maybe a stronger signal is needed. I have since replaced my HDD and had to reinstall grbaz and cannot get op25.grc to run at all now without crashing 
What did you use for grbaz install instructions?
On Thu, 3/30/17, r_johnson2020 at yahoo.com [op25-dev] <op25-dev at yahoogroups.com> wrote:

 Subject: [op25-dev] OP25 and GRC
 To: op25-dev at yahoogroups.com
 Received: Thursday, March 30, 2017, 5:23 PM
 Regarding Balint's newer
 (2016 version) OP25 flowgraph for GRC, has anyone been
 sucessful in getting it to work yet? 
 I see
 that there is a recent thread here regarding OP25 command
 line version from op25.osmocom.org/trac/wiki. I've been
 able to get that version working on the command line. No
 problems there. But when it comes to running the OP25
 flowgraph in GRC, well, it seems to require some black magic
 to get it to work (I've heard rumors of a few people
 getting it to work, but unverified).  The command line
 version is great and works wonderfully, but it doesn't
 really teach us much about the inner workings of DSP and
 I'm running a
 dedicated Ubuntu 14.04 machine. I installed OP25, GNU Radio
 etc verbatim from the install instructions on the OP25
 install page. Every thing surprisingly went well. Regarding
 Balint's flowgraph, I can get the flowgraph to compile
 and run. I set the center frequency to the frequency I'm
 transmitting on. All the graphs and scopes seem to
 functioning correctly. They show a signal being received
 (from my transmitter), but it just can't seem to get
 around to decoding the P25 signal. 
 I know that gnuradio-companion (GRC) and
 flowgraphs aren't technically a part of the OP25
 project, but I thought someone else here may have fiddled
 with it and got it to work. I've been trying on and off
 for several days without success. 
 https://github.com/balint256/gr-baz https://github.com/balint256/gr-baz
 Here are the links to
 Balint's wiki and git page if anyone cares to play
 around with it. I believe the wiki page still contains the
 outdated (2013) version of the flowgraph, whereas the
 example at the git page was updated in late 2015 for GNU
 Radio v3.7.
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