Soundcard P25 decoder

Post Reply
citabria
Site Admin
Posts: 1064
Joined: Thu Aug 14, 2008 8:22 pm

Soundcard P25 decoder

Post by citabria » Fri Mar 19, 2010 10:07 pm

Hi all,

I ran into this on radioreference - might be of interest to people on here. it is a discriminator based decoder for P25 (phase and 2) and it seems to support DSTAR as well. Runs under Linux/BSD.

Use at your own risk :)

http://forums.radioreference.com/trunki ... ost1281483

Longreach
Posts: 1085
Joined: Mon Aug 25, 2008 7:38 pm
Location: Goulburn NSW

Re: Soundcard P25 decoder

Post by Longreach » Sat Mar 20, 2010 5:23 am

you tried it yet?
cheers
VK2MRC

cokebottle
Posts: 91
Joined: Wed Apr 01, 2009 10:13 am

Re: Soundcard P25 decoder

Post by cokebottle » Sat Mar 20, 2010 3:15 pm

Looks like I will have to reinstall Ubantu on my laptop & check it out ;)

Michael

centralcoastscanman
Posts: 750
Joined: Fri Oct 31, 2008 7:58 pm
Contact:

Re: Soundcard P25 decoder

Post by centralcoastscanman » Sat Mar 20, 2010 6:34 pm

it looks interesting, gives me a reason to fire up vmware again

citabria
Site Admin
Posts: 1064
Joined: Thu Aug 14, 2008 8:22 pm

Re: Soundcard P25 decoder

Post by citabria » Sat Mar 20, 2010 7:09 pm

Having issues getting the line-in to work under ALSA.

Heres some samples that the author posted to radioref:- http://depositfiles.com/en/files/cy3klbv0z

citabria
Site Admin
Posts: 1064
Joined: Thu Aug 14, 2008 8:22 pm

Re: Soundcard P25 decoder

Post by citabria » Sun Mar 21, 2010 10:06 pm

My sound device under Ubuntu is actually /dev/dsp (not /dev/audio)

DSD decoded the P25 frames and displayed the frame data fine after that (though the BER was pretty high)

citabria
Site Admin
Posts: 1064
Joined: Thu Aug 14, 2008 8:22 pm

Re: Soundcard P25 decoder

Post by citabria » Sat Mar 27, 2010 7:56 pm

OK, new version has been released and apparently someone is working on a port to windows :)

perrin45
Posts: 1
Joined: Sun Nov 29, 2009 2:25 am

Re: Soundcard P25 decoder

Post by perrin45 » Sun Mar 28, 2010 5:06 am

Just wondering what sort of transmissions here in oz such a program would be useful for, couldnt tell whether it was simply a software based scanner for unencrypted digital transmissions or if it does more then that..

Post Reply