Dick,
If you still don’t get any audio once you have implemented the suggested changes to your
scope.py command line and trunk.tsv files, then it’s very likely you don’t have the
correct NAC for the Plano PAWN simulcast system. I would suggest installing Unitrunker
on a Windows box but it does not support hackrf to my knowledge. It does support the
RTL-SDR, Airspy, and raw discriminator audio. Unitrunker would provide you with the
system NAC needed for your trunk.tsv file to run
Scopey.py. Short of that, do you have a consumer scanner that has p25? Some of the
consumer p25 scanners have a diagnostic or analyze function that will also display the NAC
when manually tuned to the control channel. The GRE PSR500/600 and equivalent Radio Shack
scanners have this feature as well as the Whistler P25 scanners. Perhaps a friend has
one of these units if you don’t have one yourself to use in determining the NAC.
On another note, I somehow got the impression that you are running OP25 (scope.py) under
Linux on Virtualbox. There are a couple of settings on your Virtualbox machine that
make a difference in how OP25 runs as well. Feel free to private email me directly if
you would like to discuss how I have my Ubuntu 14.04 + OP25 setup on Oracle Virtualbox.
Bill
William G. Becks, WA8WG
N7027 Shady Lane Circle
Porterfield, WI 54159
Telephone: 715.735.0131
Email: <mailto:wa8wg@centurytel.net> wa8wg(a)centurytel.net
From: op25-dev(a)yahoogroups.com [mailto:op25-dev@yahoogroups.com]
Sent: Wednesday, August 9, 2017 12:28 PM
To: op25-dev(a)yahoogroups.com
Subject: Re: [op25-dev] OP25 for noobs by a noob (long)
Bill
Thank you for the feedback, and the -I hw:1,0 was an attempt to force the audio
directly to the hardware device. As for the NAC,
I just used what was in a previous line as I couldn't find this information on Radio
Reference. I'll update the tsv file and keep working
on this. Thanks again.
_____
From: "'WA8WG' wa8wg(a)centurytel.net [op25-dev]"
<op25-dev(a)yahoogroups.com>
To: op25-dev(a)yahoogroups.com
Sent: Tuesday, August 8, 2017 8:20 PM
Subject: RE: [op25-dev] OP25 for noobs by a noob (long)
Dick,
It appears that you have configured scope.py to monitor the Plano PAWN Simulcast system.
I am not up on hackrf, but I would try removing the (-I hw:1,0) from your scope.py
command line.
python scope.py --args 'hackrf' -I hw:1,0 -g 65 -f 852.675e6 -N
'RF:14,IF:32,BB:26' -o 50e3 -T trunk.tsv -V -v 0
Then edit your trunk.tsv file to replace the offset (0x1E2) with a “0” then then fill in
the center frequency with a value of 852.225 that is at the mathematical center of the
Plano PAWN control channel and voice trunk frequencies. I am assuming that
you have verified the NAC 0x3bc is correct?
Bill
William G. Becks, WA8WG
Email: wa8wg(a)centurytel.net
From: op25-dev(a)yahoogroups.com [mailto:op25-dev@yahoogroups.com]
Sent: Tuesday, August 8, 2017 9:48 AM
To: op25-dev(a)yahoogroups.com
Subject: Re: [op25-dev] OP25 for noobs by a noob (long) [2 Attachments]
[ <https://mg.mail.yahoo.com/neo/launch?.rand=e08er1aqvsfjg#TopText> Attachment(s)
from Dick Wad included below]
FM/Bill/all
Didn't get the time I wanted last weekend but was able to perform the op25 reload
as you laid out and then hit issues with the hackrf not being detected by the op25. Gave
me an error that no device was found even though the syslog was reporting it was seen and
configured, and I could run the hackrf_info command and get information from it. So I went
back to the configuration that was working....now, I thought I read somewhere, and i have
read more working on this than I have in a long time, is that the audio is streamed at
96khz? from the scope views that I have seen, the op25 is working but still no audio. I
wasn't able to move the sample rate up on my virtualbox install, but was able to get
it changed on my laptop that i had also installed gqrx on. I have attached the scope.py
file and what tsv file I have created to this as well in hopes I can get any help. I am
focused on the audio portioning right now. Appreciate the help too.
_____
From: "flkmrz(a)gmail.com [op25-dev] <mailto:flkmrz@gmail.com%20[op25-dev]>
" <op25-dev(a)yahoogroups.com>
To: op25-dev(a)yahoogroups.com
Sent: Sunday, August 6, 2017 7:15 AM
Subject: Re: [op25-dev] OP25 for noobs by a noob (long)
Hi Kristof,
No intrusion -- the more the merrier.
If you could get a script working to get info from RR, that would be great. While
you're at it, if it would do the talkgroup id's too that would be very handy.
Regards,
fm