I have the OP25 GRC demo that Balint provided up and running.
Everything seems to working except I'm not getting any audio out of
the OP25 block. I'm getting the "four line" output from the dibit
output port when there is traffic on the channel, and the autotune
output is outputting data. However, no audio. I put a scope on the
audio output and it's a flat line at zero, even when the dibit output
is "four lines". Any tips on how to further troubleshoot?
Thanks,
Andy
Anyone know where I can grab a copy of the samples that used to be on the op25 wiki? Interested in getting a copy of the encrypted audio with known key.
http://www.sedition.org.au/p25-samples redirects to home page.
Thanks,
Dave
OK sorry folks - this is what one should expect when they're dealing with
ancient code (I really ought to update at some point!).
I've fixed the gr-baz/python/op25.py code to first try the new OP25 blocks
(with the slicer), and then fallback to the old version (without the
slicer).
Let me know if this works!
Thanks,
Balint
Hi Balint,
I notice that your op25.py module still has a dependence on the old Radio
Rausch FSK4 demodulator<http://radiorausch.googlepages.com/GnuradioFourLevelFSK.html>
that
the OP25 project used to use but have now incorporated into their own
source files. I was just wondering if there was any reason you didn't use
the op25.fsk4_demod_ff rather instead of fsk4.demod_ff? You have, on the
other hand, used the op25 slicer equivalent op25.fsk4_slicer_fb(levels).
Just curious.
Thanks
Cheers
Richard
On 20 April 2012 11:10, Balint <balint256(a)hotmail.com> wrote:
> I’ve just accepted the git pull request submitted by Alex Csete (thank
> you!) to fix the build issue on v3.6 of GNU Radio (tested by ‘zignig’), so
> if you grab the latest, hopefully this issue will disappear!****
>
> ** **
>
> (If other people have encountered this problem, please let them know too…)
> ****
>
> ** **
>
> *From:* op25-dev(a)yahoogroups.com [mailto:op25-dev@yahoogroups.com] *On
> Behalf Of *Richard Clarke
>
> *Sent:* Friday, 20 April 2012 8:24 AM
> *To:* op25-dev(a)yahoogroups.com
> *Subject:* Re: [op25-dev] Re: World's cheapest P25 receiver: $20 RTL2832
> dongle + new OP25 Decoder block with DES-OFB for GRC!****
>
> ** **
>
> ****
>
> Hi,****
>
> ** **
>
> I've just tried building the gr-baz module on a couple of different
> systems but I'm encountering a make error along the lines of:
> ./baz_swig.cc: No such file or directory****
>
> ** **
>
> I note someone else has also encountered the same error and pasted their
> make output to pastebin (http://pastebin.com/y6dUAxC1). This is the same
> error I'm getting. Anyone got any clues? Is this a generated file that
> isn't being generated, or a file that hasn't been included in the svn repo?
> ****
>
> ** **
>
> Thanks****
>
> ** **
>
> Cheers****
>
> Richard****
>
> ** **
>
> On 6 April 2012 02:14, Balint <balint256(a)hotmail.com> wrote:****
>
> ****
>
> LOL, I thought someone might say that J****
>
> ****
>
> Nice work at that price!!!****
>
> ****
>
> *From:* op25-dev(a)yahoogroups.com [mailto:op25-dev@yahoogroups.com] *On
> Behalf Of *ikjtel
> *Sent:* Friday, 6 April 2012 12:07 AM
> *To:* op25-dev(a)yahoogroups.com
> *Subject:* [op25-dev] Re: World's cheapest P25 receiver: $20 RTL2832
> dongle + new OP25 Decoder block with DES-OFB for GRC!****
>
> ****
>
> ****
>
> ****
>
> ****
>
> > Firstly, thank you to Max for the Slashdot mention!****
>
> ****
>
>
> Ha ha, it's a pleasure to see this project move forward.
>
> The cheapest one I've ever built was for $1.00 - picked up an old crystal
> scanner at a hamfest that happened to have a crystal in it on the proper
> frequency for a local P25 station. It only needed a disc-tap using parts
> from the junkbox...
>
> Max****
>
>
>
> ****
>
> ** **
>
> --
> *SCOTT ADAMS: Normal people believe that if it ain't broke, don't fix it.
> Engineers believe that if it ain't broke, it doesn't have enough features
> yet.*****
>
> ****
>
--
*SCOTT ADAMS: Normal people believe that if it ain't broke, don't fix it.
Engineers believe that if it ain't broke, it doesn't have enough features
yet.*
Hi everyone,
New to GNUradio and OP25. I have the OP25 block installed in GNU Radio Companion and can build a flow graph with no problem. When I try to execute the flow graph I get this error:
Traceback (most recent call last):
File "/home/aaknitt/Documents/top_block.py", line 53, in <module>
tb = top_block()
File "/home/aaknitt/Documents/top_block.py", line 34, in __init__
self.op25_decoder_0.create()
File "/usr/local/lib/python2.7/dist-packages/baz/op25.py", line 65, in create
self.p25_decoder = op25.decoder_ff(self.op25_msgq)
AttributeError: 'module' object has no attribute 'decoder_ff'
I'm guessing this is because I don't have something installed properly, but I can't put my finger on how to remedy the problem. Any advice or suggestions would be appreciated.
Regards,
Andy
Yes me again haha :-)
I thought it might be a good idea for the less advanced in the group (like me) and others, for members to save there flow chart files in the files section. Like a P25 decode flowchart, using the gr-baz project. FM Demodulation and any other that may be useful.
Hi yes its me again lol. When i try the scope command i get the following. Does this indicate that gnuradio is not installed correctly.
./scope.py -a -v 10 -g 50
Traceback (most recent call last):
File "./scope.py", line 40, in <module> from gnuradio import audio, eng_notation, fsk4, gr, gru, repeater
ImportError: cannot import name fsk4
I would just like to thank everyone for your support
A new group has been created for those interested in the amateur radio use of the commercial digital voice technologies of P25 & DMR in Illinois.
You can join the group at:
http://groups.yahoo.com/group/IllinoisP25-DMR/
Look forward to your participation in the group.
Hi gang i have installed gnu radio and when i get to the
./configure command i get the following error
checking for pcap_open_live, pcap_open_dead, pcap_close, pcap_next, pcap_next_ex, pcap_datalink, pcap_inject, pcap_dump, pcap_geterr in -lpcap... no
configure: error: libpcap library not found.
Thanks for your support
Allan
