Hi folks,
A quick update: I've added to gr-baz <https://github.com/balint256/gr-baz>
some new OP25 blocks.
I've split up the combined 'Decoder' block into the FSK4 and actual decoder
(simple) parts.
I've also added the traffic pane - you'll see how it fits together in the
sample/OP25.grc
Make sure you back up your old GRC file before you update so you don't end
up in a nasty XML merge conflict!
For those people that aren't hearing any audio, check if the traffic pane is
showing you anything.
For those wondering about talk of patches, instructions are here:
http://wiki.spench.net/wiki/OP25
If you use r307+patch, you can also check the console to see if decoder
information starts appearing to see if valid frames are being detected.
Balint
Hi guys.
First thank everybody for helping me those previous week.
I'm really stuck on something now that I can't understand:
When I' using the file source in OP25.grc everything seems working perfectly, I got the 4 ligns in the Dibits and I can hear someone speaking.
HOWEVER when I use my USRP B100 here is the situation: I have 4 perfect lignes but NO AUDIO.
Moving from the File source to the USRP, I dont touch any audio sink frequency or interpolation of the Rational Resampler or Channel rate so logicaly the probleme should not be coming from here..
Im pretty sure that I applied the patch r307. Furthermore this patch is also to make the audio work wich is the case with the file source so what..?
Any suggestions please? Why the audio is working with the files source but not with the USRP?
Thank you very much
Souf
Hi everyone,
I am sort of weary of updating to using next branch (3.7) from 3.6.3
because I don't want lose my balance and get dumped. But I was told
there is a feature there I may need.
So is anyone using OP25 with 3.7 successfully?
Cheers,
--
Matt D
------------
Hi guys,
I have a pretty straight forward question. In directory
op25/blocks/src/lib there is a file called logfile_du_handler.h and the
comments within say that the code writes frames to a log file and that
the name of the log file is d_log. How do we access this log file?
Thanks a bunch
--
Matt D
------------
Hi guys,
I managed to fix the error about the PYTHONPATH, thanks to Matt and Steve. It was still not working after setting the PYTHONPATH but I understood that I had to copy some files like OP25.py in a new directorie /usr/local/lib/python2.7/dist-packages/gnuradio and create here the directorie OP25. It stoped showing the import error.
However I have now this error and any hint and help are welcome:
-------------------------------------
File "/usr/local/lib/python2.7/dist-packages/baz/op25.py", line 88, in create
raise Exception("Could not find a decoder to use")
Exception: Could not find a decoder to use
-------------------------------------
I made some searches in the previous discussion but I could not find anything.
Any Idea?
ps: I still have not applied the patch yet (maybe it's the reason?).. On the spench website they said to apply it to "the svn source" is it this one: ~/gnuradio/gr-baz ?
Thanks in advance for you awnsers
SouF
Hi everyone,
Has anybody seen this on a wireshark frame? :
Packet Data Unit[Dissector bug, protocol P25 CAI: packet-p25cai.c:1453:
failed assertion "state != -1"]
Thanks,
--
Matt D
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I am currently using GNUradio v3.6.3. IF I in move to v3.6.4.1 will
this break my OP25?
I am trying to install mulitmode.py but the make dies with
"grcc:error:no such option:-d" so I think I may need the new GNUradio.
- --
Matt D
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Hi everybody
I'm a graduate student working on a project and I have to realise a reception with an USRP of P25 standart communications.
I have basics knowledge in linux and I have been struggeling those days to make work gnu radio and gr-baz (with op25 module..).
I tried many distribution: Ubuntu 12.10/ 32 and 64 bits and now I'm on Ubuntu 12.04 (64) and still have problem while compiling gnu radio..
I understood that there are a lot of dependency problems due to the different versions of Ubuntu and gnuradio.
My question is simple, wich Ubuntu version should I take in order to make the gnuradio build script work without problems and gr-baz get installed without issues?
Thank you very much
Souf
Hi everybody!
I would have thought that there would be samples the web but i have been unable to find any and the link on osmocom is broken. I am in need of some signal samples so i can familiarize myself with the scopes and how the signals look in them. I want to start with P25 but I really need to be familiar with all sorts of signals so sharing of any kind of signal will be much appreciated.
Thanks!
Matt
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Hello everyone!
I would like to bring back one of the tabs in the old OP25; the tab
that displayed all the ids and wut-not. I had the old version somehow
but I uninstalled it and deleted it so i cant even have a look at the
code behind that tab. Would it be possible to add that tab to the new
OP25? If so that would be something I would like to try to do.
I was also wondering if it would be possible to add the 'correlation'
tab from the signal scope app to the new OP25?
Thanks,
Matt D
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