op25-dev

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312 discussions

What Are All these Plot Graphs For?
by 'Trunk Tracker' trunktracker＠tampabay.rr.com [op25-dev] 10 Dec '18

10 Dec '18

I see there's 5 different graphs, but no idea what these are or how to read them. What does this mean? trunktracker(a)tampabay.rr.com

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How to Listen to DMR
by 'Trunk Tracker' trunktracker＠tampabay.rr.com [op25-dev] 09 Dec '18

09 Dec '18

Am I seeing this right, online you can listen to DMR? How do we do it? Is there a certain command we type? trunktracker(a)tampabay.rr.com

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multiple trunk systems
by wllmbecks＠gmail.com [op25-dev] 06 Dec '18

06 Dec '18

Trunktracker, If your trunk.tsv has multiple system define as in the example trunk.tsv that get installed with op25 then the software will scan or sample all of the systems defined approximately every five seconds as long that the control channel that it is currently tuned to is idle. Voice traffic halts the scan or other systems and resets the timer. This feature is not real useful if your system are fairly busy as you'll end up missing a lot of traffic with the round robin taking place. Probably best to only have one system in your trunk.tsv file, but that is your choice to determine what works best for you. Bill

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Re: [op25-dev] multiple trunk systems
by Dick Wad bwmzzzx＠yahoo.com [op25-dev] 06 Dec '18

06 Dec '18

Quick Question......has the decryption portioin been started or initially discussed for developement at this time?????

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Beginner's Guide To Setting Up OP25 From Scratch
by trunktracker＠tampabay.rr.com [op25-dev] 04 Dec '18

04 Dec '18

Is there any kind of a current step-by-step beginner's guide to setup OP25 from Scratch? Especially for using it on Windows. For example, I have VMware Workstation 12 Player version 12.5.2 installed on a Windows 7 64-bit machine. Is there a certain version of Ubuntu that we have to use? The link to download it https://www.ubuntu.com/download/desktop https://www.ubuntu.com/download/desktop has a version called Ubuntu 18.04.1 LTS and another version called Ubuntu 18.10. How do we know which one to use and what are the command prompt scripts that we should type to install OP25? Thanks.

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error message help [1 Attachment]
by n3zra＠yahoo.com [op25-dev] 19 Nov '18

19 Nov '18

I am very new to using Ubuntu OS and O op25. I cannot get the system running, my rtl sdr does work on the virtual box but op 25 is not starting. attached is the error message I am getting. I appreciate the the help. Thank you in advance. Andy N3ZRA

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confused [1 Attachment]
by n3zra＠yahoo.com [op25-dev] 16 Oct '18

16 Oct '18

I have finally gotten the OP25 and the virtual box to work again on my windows machine, now I am getting an error that I was not before. This is a fresh install of everything from virtual box onward. I get the following message when attempting to start OP25. Traceback (most recent call last): File ".rx.py", line 52, in <module> import op25 ImportError: No module named op25 Then it goes back to the command prompt. What does this mean? Attaching a screen shot. Thanks for the help. Andy

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Re: [op25-dev] P25 decoding using RTL_SDR
by Sean Kealy superstardodge＠yahoo.com [op25-dev] 24 Aug '18

24 Aug '18

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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P25 decoding using RTL_SDR
by Nishant Parepalli nishantparepalli＠yahoo.in [op25-dev] 16 Jul '18

16 Jul '18

I have been trying to decode P25 signal using RTL2832U and ubuntu 16.04. I had run the rx.py script from the Op25 rep with the arguments. The FFT seems to be right. However I have no audio nor any NAC or tsbks being identified. Can anyone point out where I am going wrong? TIA

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SkyWave Linux
by Dick Wad bwmzzzx＠yahoo.com [op25-dev] 07 Jul '18

07 Jul '18

Has anyone else tried to use the SkyWave linux distro yet besides me? It's based off the Ubuntu 16 LTE. I have installed this to my laptop and then just for grins installed the boatbod version of op25 on top of it. To my suprise the op25 is working along with cubicsdr several other utilities on the distro. I was even able to use my hackrf and ham-it-up box to search around the lower HF bands too. I did try to load SkyWave onto my windows 7 laptop at work but it lost it's network ability. Still trying to figure that one out. Anyway, that's all and can't wait to hear some other stories regarding this as well. 73's

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