trunk-recorder cannot decode P25 Phase 2

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CqDx

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Hello,
I have been using a Raspberry Pi 3 B+ with trunk-recorder installed and it’s doing a great job on decoding and recording P25 Phase 1 traffic, but when the network recently started carrying Phase 2 traffic, all it records were garble and unintelligible traffic. I see the logs reflect it recognizes TDMA traffic but it just would not record Phase 2 intelligibly.

Anyone has experienced this as well and if so, what was your solution?

Thank you!
 

GTR8000

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Experienced the same with a fully TDMA system. Was mentioned by the developer that it's possible there is an issue with decoding TDMA on ARM hardware. I'm glad you posted this, as it confirms what I was experiencing. Hopefully they'll be a solution for it. Make sure you post this on GitHub also.

 

CqDx

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I had no issue decoding and recording it on SDS100, I’m inclined to try a different Linux machine just to see if it’s ARM hardware related
 

GTR8000

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MRRS/Metro-25? Let me know how you make out if you try non-ARM hardware. Right now I only have the same 3 B+ available for testing, and obviously that hasn't been successful with TDMA for either of us.
 

CqDx

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Yes and also NJICS on Alpine and DOITT P25 site also. The same problem across Harris, Motorola - ASR and Simulcast.
 

GTR8000

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Okay good. I mean, not good, but good that it's not an issue with just one TDMA system. And you having success with the FDMA talkgroups on those systems is also reassuring.
 

jonk6

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You might want to grab the latest TR from GitHub. It includes a fix for this issue.
 

CqDx

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I can confirm that with the latest update on trunk-recorder this issue has been resolved. !
 
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