Thank you, Denny. No to just about all your questions. I failed. No instructions were read. I'll go do it the right way now 
Thanks
Mike
Thanks
Mike
SDRTrunk
- Thread starter DSheirer
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Got it working. Compiled under Linux and then copied the product to Win. Runs just fine.
The LSM decoder seems to be working great man. Great job!
Mike
The LSM decoder seems to be working great man. Great job!
Mike
Max (KA1RBI) deserves the credit for the LSM ... I'm using a slightly modified version of his OP25 gardner detector/costas loop code.
I figured as much, but that does not take away from what you've created so far, what you are adding, the fact that you were able to incorporate Max's code in, etc.
I'm still trying to wrap my head around this though. I'm not hearing any audio. I had just one dongle plugged in, and I'd monitor the CC. Then when there was activity on a VC, I'd click on that channel on the left. I could see the messages / events, but I'm not hearing the audio. I suspect I might have a wrong device set as default.
At any rate, after I put the second dongle in, it detects and tunes it. Although it isn't giving me any messages/events anymore for any of the channels. I have to get used to the heirarchy of everything. But I love the features. Great job!
Mike
I haven't added support for P25 audio or traffic channel following yet.
If you click on any of the decoding channels in the left side panel, it will highlight in yellow and you will hear audio from that channel. All of the decoders (except NBFM - no squelch) implement their own squelch control, so you'll only hear audio when it detects/decodes control messages reflecting audio activity.
I'm still working on the P25 channel state control code this weekend, so that it will correctly update current channel call state (call, data, etc), talkgroup and system info and it will correctly log call/data/system events in the events tab.
After that, I'll add support for the MBE audio codec so that you can hear voice on the traffic channels.
Well as much as I wanted to try the new stuff on the Cortland system I can't seen to wrap my head around getting all this to install/compile so I will wait patiently until it is released. Usually I can get around installing things to get things to work but not so much this time. But I will be happy to be able to try it out when it does get released. Especially when it can follow and decode voice traffic. It might end up replacing the Unitrunker setup I am using for my online stream if it works better.
D
DaveNF2G
Guest
The only MultiNet left in New York is Rensselaer County. There are several Passport systems operated by radio shops, particularly down the Hudson Valley.
I'm still hoping for a Windows-based replacement for LTRTrunker.
I posted the P25 decoder test build ... and started a new thread:
http://forums.radioreference.com/tr...unk-p25-decoder-test-release.html#post2344143
http://forums.radioreference.com/tr...unk-p25-decoder-test-release.html#post2344143
Any adjustments for P25 audio?
Hi
I'm running SDRtrunk v 0.2 on a dual boot PC, Windows 7 / Ubuntu 16.04 using two RTL-2832 with Rafael Micro R820T Tuners. Performance is astounding, kudos to Denny on the code.
There's one thing I'd like to see if I can better in my build - trunked P25 audio at times is a little distorted making it hard to understand what is said. Much of the time the audio is good quality and easily understood.
The PC with the tuners is next to a BCD 996XT, both use indoor antennas. My location is about 1 mile from the trunk site.
Is there anything that I might could adjust to improve the audio?
Hi
I'm running SDRtrunk v 0.2 on a dual boot PC, Windows 7 / Ubuntu 16.04 using two RTL-2832 with Rafael Micro R820T Tuners. Performance is astounding, kudos to Denny on the code.
There's one thing I'd like to see if I can better in my build - trunked P25 audio at times is a little distorted making it hard to understand what is said. Much of the time the audio is good quality and easily understood.
The PC with the tuners is next to a BCD 996XT, both use indoor antennas. My location is about 1 mile from the trunk site.
Is there anything that I might could adjust to improve the audio?
The main factors that you can control are:
1) Tuner PPM adjustment - ensure the signals are aligned with the frequency scale
2) Gain - just enough to maximize the signals without raising the noise floor.
A shortfall in the code is in my JMBE library implementation of the IMBE codec. I've got a few ideas on how to improve the performance of the codec that will hopefully improve audio quality.
Are you using the C4FM or the LSM decoder?
cheers,
Denny
nd5y
Member
Will SRDtrunk work with discriminator audio fed into a sound card or is it only for USB SDRs?
I need a Unitrunker replacement that will run on Linux.
I need a Unitrunker replacement that will run on Linux.
I originally planned to support discriminator audio and the program will allow you to route sound card audio through the decoders. However, it doesn't decode anything. I don't have a discriminator tapped scanner to test against to determine what's going wrong with the decoding.
Denny
nd5y
Member
That's all I use is a discriminator tap. I don't know anything about software debugging so I probably can't be of any help.
Hi Denny;
Configure a program (yours or something like SDR#) to pipe unfiltered discriminator audio to VB Cable. Point your decoder's audio input to the other end of the virtual audio device. That will allow you to test live signals with out actually tapping an old scanner. Another option is to request WAV audio files from someone (like Tom) with a tapped scanner.
This is dirty but actually works - MP3 recording of control channel + 1/8" patch cable to loop back headphone audio into microphone input. Be VERY careful with volume setting (start from zero) to avoid blowing the microphone input.
Configure a program (yours or something like SDR#) to pipe unfiltered discriminator audio to VB Cable. Point your decoder's audio input to the other end of the virtual audio device. That will allow you to test live signals with out actually tapping an old scanner. Another option is to request WAV audio files from someone (like Tom) with a tapped scanner.
This is dirty but actually works - MP3 recording of control channel + 1/8" patch cable to loop back headphone audio into microphone input. Be VERY careful with volume setting (start from zero) to avoid blowing the microphone input.
I have managed to get SDRtrunk working on my laptop.
it is an amazing software. I am running into an issue however, I have got the control channel locked in. however, two of the voice channels 773.08125 and 773.8125 keep showing up with "channel processing error" im not sure what that means..
this is the system I am working with MOSWIN.
Trenton 700 Grundy 769.45625c 769.70625 770.45625a 770.70625 773.08125 773.83125
it is an amazing software. I am running into an issue however, I have got the control channel locked in. however, two of the voice channels 773.08125 and 773.8125 keep showing up with "channel processing error" im not sure what that means..
this is the system I am working with MOSWIN.
Trenton 700 Grundy 769.45625c 769.70625 770.45625a 770.70625 773.08125 773.83125
Can you send me the sdrtrunk_app.log file? It is stored in your (User Directory)/SDRTrunk/logs/ folder
You can post it in the sdrtrunk support forum:
https://groups.google.com/forum/#!forum/sdrtrunk
Denny
rcummings14
Member
locking out talkgroups
is there a simple way to lock out talkgroups on a p-25 system.
is there a simple way to lock out talkgroups on a p-25 system.
i think you can set the priority to 0 (zero), that's what i do
adcockfred
Member
What an exciting time ! Is this ph-I voice ?
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