op25-dev August 2018

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Re: [op25-dev] P25 decoding using RTL_SDR

by Sean Kealy superstardodge＠yahoo.com [op25-dev]

Been away from this project for awhile, Where can I get a copy of the live cd? -------------------------------------------- On Sun, 7/15/18, gnorbury(a)bondcar.com [op25-dev] <op25-dev(a)yahoogroups.com> wrote: Subject: [op25-dev] Re: P25 decoding using RTL_SDR To: op25-dev(a)yahoogroups.com Received: Sunday, July 15, 2018, 7:05 PM Without further information (i.e. stderr.2 logs) it's hard to say for sure what the problem is. Most likely although your fft plot "looks" good you may not be accurately tuned. Typically you'll need to adjust ppm (-q parameter) to bring the tuning into alignment enough that the p25_demod locks on. When that happens you should see the TSBK counter start to increment. If you're using the "boatbod" fork you can use the mixer plot (key #5) to dial in the ppm and fine tuning more accurately than is possible with the fft plot alone. Furthermore, you can also use a nac value of 0 if you don't know or cannot verify the nac of the system you are trying to tune. #yiv5719345116 #yiv5719345116 -- #yiv5719345116ygrp-mkp { border:1px solid #d8d8d8;font-family:Arial;margin:10px 0;padding:0 10px;} #yiv5719345116 #yiv5719345116ygrp-mkp hr { border:1px solid #d8d8d8;} #yiv5719345116 #yiv5719345116ygrp-mkp #yiv5719345116hd { color:#628c2a;font-size:85%;font-weight:700;line-height:122%;margin:10px 0;} #yiv5719345116 #yiv5719345116ygrp-mkp #yiv5719345116ads { margin-bottom:10px;} #yiv5719345116 #yiv5719345116ygrp-mkp .yiv5719345116ad { padding:0 0;} #yiv5719345116 #yiv5719345116ygrp-mkp .yiv5719345116ad p { margin:0;} #yiv5719345116 #yiv5719345116ygrp-mkp .yiv5719345116ad a { color:#0000ff;text-decoration:none;} #yiv5719345116 #yiv5719345116ygrp-sponsor #yiv5719345116ygrp-lc { font-family:Arial;} #yiv5719345116 #yiv5719345116ygrp-sponsor #yiv5719345116ygrp-lc #yiv5719345116hd { margin:10px 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op25-dev August 2018