On 12/17/17 18:47, gnorbury@bondcar.com [op25-dev] wrote:

rx.py doesn't look for signals like SIGUSR1 at present, but there's no reason it couldn't be implemented if desired.  There is already a facility to lock out TG's using the "L" key in the terminal, but it

Thanks, Graham. If it could handle the signal from an external program, that would be ideal. It would be managed remotely, and by people I don't necessarily want at the command-line. :)

I tried hacking it together myself but my python skills are lacking. But I can build my web UI and middleware in another language if rx.py can handle the signal.

rx.py can already monitor conventional traffic. In fact this feature was there before trunking was.

On Tue, 19 Dec 2017 at 06:55, 'William Becks' wa8wg@centurytel.net [op25-dev] op25-dev@yahoogroups.com wrote:

Graham,

Thank you so much for your efforts in the continuing development of op25. Especially for the recent coding changes allowing for FQDN --wireshark-host command line entry. The addition of the --nocrypt function was very innovative and solved an issue in my area where some talkgroups use a mix of clear, and encrypted transmissions that were previously impossible to reject without also filtering the clear voice transmissions as well.

I am personally very grateful for the work that you and Max have done to improve the code. If I could wish for one new feature, it would be to incorporate code allowing rx.py to monitor conventional IMBE non-trunked transmissions. Such a feature would be great for monitoring small non-trunked systems in addition to providing a great resource to monitor and analyze amateur P25 transmissions from MMDVM and similar devices.

Keep up the good work and best of holiday greetings!

Bill, WA8WG

*From:* op25-dev@yahoogroups.com [mailto:op25-dev@yahoogroups.com] *Sent:* Saturday, December 16, 2017 7:08 PM *To:* op25-dev@yahoogroups.com *Subject:* [op25-dev] Recent changes

For my version of op25 I've just pushed a change to support using hostnames/fully qualified domain names (or straight IP addresses) in the --wireshark-host command line parameter (-W).

Earlier changes include the addition of the source radio id (where available) to the terminal screen, as well as indication of when encryption is active (only applies when using --nocrypt command line option).

Hi Bill,

trunk.csv isn't required for conventional. Here's a few exmaple commands I have used with my USRPs (via UHD) and airspy:-

../rx.py -S 2500000 -o 50000 -q 2 -f 434075000 --args 'uhd' -D fsk4 -P fft --gains 'PGA:10'

../rx.py -S 1000000 -o 50000 -q 39 -f 434075000 --args 'uhd' --gains 'PGA:40'

../rx.py -S 2500000 -o 50000 -q 2 -f 438187500 --args 'airspy' -D fsk4 -P fft --gains 'MIX:5'

/rx.py -S 1000000 -o 50000 -q 2 -f 438187500 --args 'uhd' -D fsk4 -P fft --gains 'PGA:30'

Cheers, Matt

On 19 December 2017 at 09:06, 'William Becks' wa8wg@centurytel.net [op25-dev] op25-dev@yahoogroups.com wrote:

OK. How does one setup the rx.py command line and/or trunk.tsv file if required to monitor conventional traffic? Can you please post example configuration?

Thank you,

Bill, WA8WG

*From:* op25-dev@yahoogroups.com [mailto:op25-dev@yahoogroups.com] *Sent:* Monday, December 18, 2017 2:43 PM *To:* op25-dev@yahoogroups.com *Subject:* Re: [op25-dev] Recent changes

rx.py can already monitor conventional traffic. In fact this feature was there before trunking was.

On Tue, 19 Dec 2017 at 06:55, 'William Becks' wa8wg@centurytel.net [op25-dev] op25-dev@yahoogroups.com wrote:

Graham,

Thank you so much for your efforts in the continuing development of op25. Especially for the recent coding changes allowing for FQDN --wireshark-host command line entry. The addition of the --nocrypt function was very innovative and solved an issue in my area where some talkgroups use a mix of clear, and encrypted transmissions that were previously impossible to reject without also filtering the clear voice transmissions as well..

I am personally very grateful for the work that you and Max have done to improve the code. If I could wish for one new feature, it would be to incorporate code allowing rx.py to monitor conventional IMBE non-trunked transmissions. Such a feature would be great for monitoring small non-trunked systems in addition to providing a great resource to monitor and analyze amateur P25 transmissions from MMDVM and similar devices.

Keep up the good work and best of holiday greetings!

Bill, WA8WG

*From:* op25-dev@yahoogroups.com [mailto:op25-dev@yahoogroups.com] *Sent:* Saturday, December 16, 2017 7:08 PM *To:* op25-dev@yahoogroups.com *Subject:* [op25-dev] Recent changes

For my version of op25 I've just pushed a change to support using hostnames/fully qualified domain names (or straight IP addresses) in the --wireshark-host command line parameter (-W).

Earlier changes include the addition of the source radio id (where available) to the terminal screen, as well as indication of when encryption is active (only applies when using --nocrypt command line option).

Matt.

I don’t think this works with Graham’s op25 (rx.py) fork having tried a number of configurations (combinations) but not able to decode conventional P25 non-trunked IMBE. Perhaps Graham or Max can elaborate if this functionality is still supported.

Thanks again!

Bill, WA8WG

From: op25-dev@yahoogroups.com [mailto:op25-dev@yahoogroups.com] Sent: Monday, December 18, 2017 5:54 PM To: op25-dev@yahoogroups.com Subject: Re: [op25-dev] Recent changes

Hi Bill,

trunk.csv isn't required for conventional. Here's a few exmaple commands I have used with my USRPs (via UHD) and airspy:-

../rx.py -S 2500000 -o 50000 -q 2 -f 434075000 --args 'uhd' -D fsk4 -P fft --gains 'PGA:10'

../rx.py -S 1000000 -o 50000 -q 39 -f 434075000 --args 'uhd' --gains 'PGA:40'

../rx.py -S 2500000 -o 50000 -q 2 -f 438187500 --args 'airspy' -D fsk4 -P fft --gains 'MIX:5'

/rx.py -S 1000000 -o 50000 -q 2 -f 438187500 --args 'uhd' -D fsk4 -P fft --gains 'PGA:30'

Cheers, Matt

On 19 December 2017 at 09:06, 'William Becks' wa8wg@centurytel.net [op25-dev] op25-dev@yahoogroups.com wrote:

OK. How does one setup the rx.py command line and/or trunk.tsv file if required to monitor conventional traffic? Can you please post example configuration?

Thank you,

Bill, WA8WG

From: op25-dev@yahoogroups.com [mailto:op25-dev@yahoogroups.com] Sent: Monday, December 18, 2017 2:43 PM To: op25-dev@yahoogroups.com Subject: Re: [op25-dev] Recent changes

rx.py can already monitor conventional traffic. In fact this feature was there before trunking was.

On Tue, 19 Dec 2017 at 06:55, 'William Becks' wa8wg@centurytel.net [op25-dev] op25-dev@yahoogroups.com wrote:

Graham,

Thank you so much for your efforts in the continuing development of op25. Especially for the recent coding changes allowing for FQDN --wireshark-host command line entry. The addition of the --nocrypt function was very innovative and solved an issue in my area where some talkgroups use a mix of clear, and encrypted transmissions that were previously impossible to reject without also filtering the clear voice transmissions as well..

I am personally very grateful for the work that you and Max have done to improve the code. If I could wish for one new feature, it would be to incorporate code allowing rx.py to monitor conventional IMBE non-trunked transmissions. Such a feature would be great for monitoring small non-trunked systems in addition to providing a great resource to monitor and analyze amateur P25 transmissions from MMDVM and similar devices.

Keep up the good work and best of holiday greetings!

Bill, WA8WG

From: op25-dev@yahoogroups.com [mailto:op25-dev@yahoogroups.com] Sent: Saturday, December 16, 2017 7:08 PM To: op25-dev@yahoogroups.com Subject: [op25-dev] Recent changes

For my version of op25 I've just pushed a change to support using hostnames/fully qualified domain names (or straight IP addresses) in the --wireshark-host command line parameter (-W).

Earlier changes include the addition of the source radio id (where available) to the terminal screen, as well as indication of when encryption is active (only applies when using --nocrypt command line option).

Graham,

Below are two test examples of my attempts to monitor conventional P25 (IMBE) voice transmissions. I am using my VHF XTS5000 as a test signal generator having one of the conventional personalities programed for ASTRO25 IMBE on an amateur simplex (146.460) frequency. However, rx.py reports an exception and terminates without decoding LDU1/LDU2. In a previous attempt, I setup a dummy.tsv file to include the NAC with control channels fields set to “”, and then with set to “0” but no joy although rx.py didn’t report an exception and terminate. There was just no indication of decoding LDU1/LDU2 in the console output with an on-frequency P25 signal applied to the SDR.

Please let me know if there are any other tests that might help to diagnose this.

Thank you,

Bill, WA8WG

Test example #1: < imbe.sh> ./rx.py --args 'rtl' --gains 'lna:49' -f 146..460e6 -q 0 -S 1000000 -v 10 -V -U 2> stderr.2

Terminal output

rock64@rock64:~/op25/op25/gr-op25_repeater/apps$ ./imbe.sh

linux; GNU C++ version 6.3.0 20170221; Boost_106200; UHD_003.009.005-0-unknown

gain: name: LNA range: start 0 stop 0 step 0

setting gain lna to 49

supported sample rates 250000-2560000 step 24000

set_center_freq: 146460000

rock64@rock64:~/op25/op25/gr-op25_repeater/apps$

Error log output

gr-osmosdr 0.1.4 (0.1.4) gnuradio 3.7.10

built-in source types: file osmosdr fcd rtl rtl_tcp uhd miri hackrf bladerf rfspace airspy soapy redpitaya

Using device #0 Realtek RTL2838UHIDIR SN: 00000001

Found Rafael Micro R820T tuner

[R82XX] PLL not locked!

Exact sample rate is: 1000000.026491 Hz

[R82XX] PLL not locked!

p25_demodulator::connect_chain() demod_type=cqpsk

Project 25 IMBE Encoder/Decoder Fixed-Point implementation

Developed by Pavel Yazev E-mail: pyazev@gmail.com

Version 1.0 (c) Copyright 2009

This program comes with ABSOLUTELY NO WARRANTY.

This is free software, and you are welcome to redistribute it

under certain conditions; see the file ``LICENSE'' for details.

op25_audio::open_socket(): enabled udp host(127.0.0.1), wireshark(23456), audio(23456)

p25_frame_assembler_impl: do_imbe[1], do_output[0], do_audio_output[1], do_phase2_tdma[0], do_nocrypt[0]

audio device: default

main: exception occurred

main: exception:

Traceback (most recent call last):

File "./rx.py", line 778, in <module>

if tb.process_qmsg(msg):

File "./rx.py", line 731, in process_qmsg

js = self.trunk_rx.to_json()

File "/home/rock64/op25/op25/gr-op25_repeater/apps/trunking.py", line 726, in to_json

d[self.current_nac]['srcaddr'] = self.current_srcaddr

KeyError: None

Exception in thread Thread-2 (most likely raised during interpreter shutdown):

Test example #2: < imbe.sh> ./rx.py --args 'rtl' --gains 'lna:49' -f 146..460e6 -q 0 -S 1000000 –D fsk4 -v 10 -V -U 2> stderr.2

Terminal Output

rock64@rock64:~/op25/op25/gr-op25_repeater/apps$ ./imbe.sh

linux; GNU C++ version 6.3.0 20170221; Boost_106200; UHD_003.009.005-0-unknown

gain: name: LNA range: start 0 stop 0 step 0

setting gain lna to 49

supported sample rates 250000-2560000 step 24000

set_center_freq: 146460000

rock64@rock64:~/op25/op25/gr-op25_repeater/apps$

Error log output

gr-osmosdr 0.1.4 (0.1.4) gnuradio 3.7.10

built-in source types: file osmosdr fcd rtl rtl_tcp uhd miri hackrf bladerf rfspace airspy soapy redpitaya

Using device #0 Realtek RTL2838UHIDIR SN: 00000001

Found Rafael Micro R820T tuner

[R82XX] PLL not locked!

Exact sample rate is: 1000000.026491 Hz

[R82XX] PLL not locked!

p25_demodulator::connect_chain() demod_type=fsk4

Project 25 IMBE Encoder/Decoder Fixed-Point implementation

Developed by Pavel Yazev E-mail: pyazev@gmail.com

Version 1.0 (c) Copyright 2009

This program comes with ABSOLUTELY NO WARRANTY.

This is free software, and you are welcome to redistribute it

under certain conditions; see the file ``LICENSE'' for details.

op25_audio::open_socket(): enabled udp host(127.0.0.1), wireshark(23456), audio(23456)

p25_frame_assembler_impl: do_imbe[1], do_output[0], do_audio_output[1], do_phase2_tdma[0], do_nocrypt[0]

audio device: default

main: exception occurred

main: exception:

Traceback (most recent call last):

File "./rx.py", line 778, in <module>

if tb.process_qmsg(msg):

File "./rx.py", line 731, in process_qmsg

js = self.trunk_rx.to_json()

File "/home/rock64/op25/op25/gr-op25_repeater/apps/trunking.py", line 726, in to_json

d[self.current_nac]['srcaddr'] = self.current_srcaddr

KeyError: None

Exception in thread Thread-2 (most likely raised during interpreter shutdown):

From: op25-dev@yahoogroups.com [mailto:op25-dev@yahoogroups.com] Sent: Wednesday, December 20, 2017 6:00 AM To: op25-dev@yahoogroups.com Subject: RE: [op25-dev] Recent changes

Bill, Matt,

I'm not aware of a specific reason why conventional wouldn't work, but I'm happy to look at it if we can localize the problem. Since I don't have any P25 conventional to test against, might I request the first step is to enable log level 10 (-v 10) and then park the app on top of a conventional frequency and see what appears in the log.

-D fsk4 (this is a guess, so try with and without) -f <desired frequency> -V -U -v 10 -S 960000 -q <ppm> -d <offset> (or whatever values work for you on a trunked system)

You shouldn't need (or want to use) the -T trunk.tsv parameter.

In an ideal world you'd see some LDU1 / LDU2 messages in the log and hear audio, but I'm going to guess that's not happening right now for whatever reason.