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@yahoo.com [op25-dev] <op25-dev@yahoogroups.com> wrote:

Subject: [op25-dev] OP25 and GRC
To: op25-dev@yahoogroups.com
Received: Thursday, March 30, 2017, 5:23 PM

Hello,

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
P25.

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.

http://wiki.spench.net/wiki/Gr-baz#op25
http://wiki.spench.net/wiki/Gr-baz#op25
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outdated (2013) version of the flowgraph, whereas the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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