[op25-dev] OP25 for noobs by a noob (long)

flkmrz@gmail.com [op25-dev] op25-dev at yahoogroups.com
Fri Aug 4 10:52:37 UTC 2017

Hi Dick,

Yeah...this software can be a real hair puller to get working.  I'm now half bald :)

Are you getting any indication that op25 is working at all on your system of interest?  Such as seeing tgid's or at least displays on any of the scope functions? Even after I got op25 to install, I had to mess with the data files to get it working.  Took quite a bit of cut and try to get it working. Op25 is also picky about system id's.  I also had a number of issues with getting the audio to the speakers.  There are a couple of ways of getting the audio out, and they each have their peculiar nit-picky things you have to do to make it work.

As Bill suggested, you could post your data files for us to look at.  Might be interesting.

If you're getting choppy audio with just using rtl_fm, my suggestion would be to try an rtl-sdr stick instead of the hack rf.  If you don't have one, I'd recommend buying one with the .5ppm tcxo -- they're under $25 on ebay or amazon.  The cheap ones are under $8 without the tcxo. The hack rf is a more complex device, so that may be contributing to the issues that you're having.  If you're still having issues after trying an rtl-sdr stick, I'd try starting over with a clean load of ubuntu and following the procedure I wrote for installing op25.  I'd also not install gqrx until after getting op25 working.  I installed several other software packages after getting my op25 working, and it broke some of the functions of op25.  When I have some time, I'm going to do another clean load, and see if I can figure out what broke the installation, and if there's a way around it.

Come back and let us know how it goes.


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