26 Nov
2018
26 Nov
'18
4:27 a.m.
OK. You’re making good progress. The last screen capture below is blank so I can’t
see what it flipped to.
I appears that you are attempting to decode Hillsborough County (P25) but may not have
specified the correct control channel frequency according to
the listing for Hillsborough County on radioreference.com. You might need to try
770.33125 or 769.80625 instead of 769.28125.
The following rx.py command line will work without a trunk.tsv file and will decode the
system provided you specify the correct (active) control channel.
../rx.py --args 'airspy' -S 3000000 -N 'LNA:15,MIX:15,IF:15' -f
769.28125e6 -t -q 0 -V -U 2> stderr.2
The 2> stderr.2 will send error messages and other status to a logfile and will prevent
garbage from appearing on your terminal screen.
This same logfile will also be very helpful if things still don’t work to diagnose the
problem.
When you have the correct control channel frequency, your terminal screen should look
something like my screen
capture shown below except that it will display your systems NAC, WACN, SYSID, and
frequency.
When op25 is working the tsbks (Trunk Signaling Blocks) value will constantly increment
except when
voice traffic is present, and will then resume as soon as the system goes idle again.
Other data will
be displayed indicating the voice trunk frequency and talkgroup ID when there is traffic
present.
Bill, WA8WG
From: op25-dev(a)yahoogroups.com <op25-dev(a)yahoogroups.com>
Sent: Sunday, November 25, 2018 6:17 PM
To: op25-dev(a)yahoogroups.com
Subject: RE: [op25-dev] Re: Beginner's Guide To Setting Up OP25 From Scratch
Well, thanks. I tried re-booting and un-plugged both Airspys and plugged only 1 of
'em back in. Then I was able to see it in VMWare and connect it via the following
menu option:
Then I ran lsusb and got the following (so now it's showing up):
When I run dmesg, I get a very long list of stuff, but here's what I found at the
end:
But now I still get a similar error when running a command line of ./rx.py --args
'airspy' -N 'LNA:10,MIX:10,IF:10' -S 3000000 -f 769.28125e6 -o 25000 :
My device is actually an Airspy Mini, so I wonder if that has something to do with it. So
as a complete shot in the dark, I tried changing it to 'airspymini' and leaving
everything else the same:
../rx..py --args 'airspymini' -N 'LNA:10,MIX:10,IF:10' -S 3000000 -f
769.28125e6 -o 25000.
Here's what I get now instead of the error:
No idea what all this is, but I noticed if I then grab the window edge and re-adjust the
size of the terminal window, the screen suddenly flips to this:
So does this mean the software program, OP25, is running now?
trunktracker(a)tampabay.rr.com <mailto:trunktracker@tampabay.rr.com>
From: wllmbecks(a)gmail.com <mailto:wllmbecks@gmail.com> [mailto:wllmbecks@gmail.com]
Sent: Sunday, November 25, 2018 8:00 AM
To: op25-dev(a)yahoogroups.com <mailto:op25-dev@yahoogroups.com>
Cc: trunktracker(a)tampabay.rr.com <mailto:trunktracker@tampabay.rr.com>
Subject: RE: [op25-dev] Re: Beginner's Guide To Setting Up OP25 From Scratch
Trunktracker
Here are a couple of steps to insure that your Airspy device is available to your Ubuntu
VM.
* Remove one of the Airspy devices. You do not need two devices in rx.py.
* Set /verify that the remaining Airspy device is virtualized in your VMware settings menu
for the Ubuntu VM.
* Start the Ubuntu VM then execute lsusb from the command line. It should return
somethings like the lines below if your Airspy devices has been virtualized.
op25@op25-VirtualBox:~$ lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 1d50:60a1 OpenMoko, Inc. <-- This is the Airspy device
Bus 001 Device 002: ID 80ee:0021 VirtualBox USB Tablet
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
* Now execute dmesg from the command line. The terminal output should have lines similar
to these.
5.911019] airspy 1-2:1.0: Board ID: 00
[ 5.911024] airspy 1-2:1.0: Firmware version: AirSpy NOS v1.0.0-rc10-0-g946184a
2016-09-19
[ 5.914976] airspy 1-2:1.0: Registered as swradio0
[ 5.914980] airspy 1-2:1.0: SDR API is still slightly experimental and functionality
changes may follow
Your VM must be able to see the Airspy before proceeding to debug your rx.py command line
and trunk.tsv files.
My Airspy is the R2 and has different sampling rates than the Mini. You must specify
the correct sample rate on
the rx.py command line that is supported by the Mini.
Bill, WA8WG
Well, I've gotten a little further but am stuck on this part. I've got 2 Airspy
Minis plugged in and if I run the following:
../rx.py --args 'airspy' -N 'LNA:10,MIX:10,IF:10' -S 2400000 -f
769.28125e6 -o 25000
I get a lot of errors (screenshot):
So is there any way to trouble shoot all of this? Thanks.
trunktracker(a)tampabay.rr.com <mailto:trunktracker@tampabay.rr.com>
From: Trunk Tracker [mailto:trunktracker@tampabay.rr.com]
Sent: Saturday, November 24, 2018 5:13 PM
To: 'op25-dev(a)yahoogroups.com'
Subject: RE: [op25-dev] Re: Beginner's Guide To Setting Up OP25 From Scratch
Thanks for the dummies link. Just what I need! It looks like there's another step to
install something called GNUPLOT:
sudo apt-get install gnuplot-x11
trunktracker(a)tampabay.rr.com <mailto:trunktracker@tampabay.rr.com>
From: op25-dev(a)yahoogroups.com <mailto:op25-dev@yahoogroups.com>
[mailto:op25-dev@yahoogroups.com]
Sent: Friday, November 23, 2018 10:48 PM
To: op25-dev(a)yahoogroups.com <mailto:op25-dev@yahoogroups.com>
Subject: [op25-dev] Re: Beginner's Guide To Setting Up OP25 From Scratch
As mentioned before this is likely the most recent how-to:
https://www.hagensieker.com/wordpress/2018/07/17/op25-for-dummies/
A year ago I wrote this, when it was just starting to be a thing to install OP25 on a
Raspberry Pi:
http://kb9mwr.blogspot.com/2017/07/listening-to-local-700-mhz-simulcast.html
<http://kb9mwr.blogspot.com/2017/07/listening-to-local-700-mhz-simulcast...html>
While I don't have any desire to run op25 on Windows, unfortunately I can see a good
how-to on that sort of thing being desirable to many.
I am a ham and I like to tinker, not just be a end user. So I don't see anyone using
this on Windows really contributing anything back to the community. I really urge people
to dig into things deeper than skin level, you never know, you just might learn something.
But that is just me.
