MCWKen
Member
Good evening. Having finally gotten OP25 to work, have been tweaking some of the known changes to improve audio and stability. However, it is still has a bass sound to it, and sometimes choppy at the beginning or end of transmissions.
I suppose this should have been prefaced by the fact that I am a neophyte when it comes to Linux, and without the help and observations on this board, would have never gotten OP25 to run.
I did see over and over again, someone suggesting that boatbod run instead of osmocom. There were some instructions how to get it, but I am not sure where to install it. Again, pardon me for being so green.
Lastly, and odd occurance last night. The tower here handles two counties, and the State Patrol. While listening, one county had a call from Radio Service about their issue at their local tower, and so forth. The volume of Radio Service was much louder than other users on this tower. After that conversation ended, the other county talk groups showed transmitting in the Terminal, yet there was no audio. Same went for the State Patrol talk group. But the original County talk group still came in, and sounded as usual. The only way to fix this was to quit OP25 and restart it.
Is this something I did not configure correctly?
Thanks in advance.
Below is how I run OP25, and the stderr.2 file.
Command line:
./rx.py --args 'rtl' --gains 'lna:39' -S 1000000 -f 770.406250e6 -o 15550 -x 02 -q 52 -T trunk.tsv -2 -U 2> stderr.2
STDERR file:
gr-osmosdr v0.1.x-xxx-xunknown (0.1.5git) gnuradio 3.7.11
built-in source types: file osmosdr fcd rtl rtl_tcp uhd plutosdr miri hackrf bladerf rfspace airspy airspyhf soapy redpitaya freesrp
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!
[R82XX] PLL not locked!
Using two-stage decimator for speed=1000000, decim=10/4 if1=100000 if2=25000
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:pen_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[1], do_nocrypt[0]
metadata update not enabled
audio device: default
Allocating 15 zero-copy buffers
1561862163.880817 PCM underrun
1561862375.011933 PCM underrun
1561862406.744887 PCM underrun
1561862411.071818 PCM underrun
1561862669.531946 PCM underrun
1561862708.089488 PCM underrun
1561862712.942487 PCM underrun
I suppose this should have been prefaced by the fact that I am a neophyte when it comes to Linux, and without the help and observations on this board, would have never gotten OP25 to run.
I did see over and over again, someone suggesting that boatbod run instead of osmocom. There were some instructions how to get it, but I am not sure where to install it. Again, pardon me for being so green.
Lastly, and odd occurance last night. The tower here handles two counties, and the State Patrol. While listening, one county had a call from Radio Service about their issue at their local tower, and so forth. The volume of Radio Service was much louder than other users on this tower. After that conversation ended, the other county talk groups showed transmitting in the Terminal, yet there was no audio. Same went for the State Patrol talk group. But the original County talk group still came in, and sounded as usual. The only way to fix this was to quit OP25 and restart it.
Is this something I did not configure correctly?
Thanks in advance.
Below is how I run OP25, and the stderr.2 file.
Command line:
./rx.py --args 'rtl' --gains 'lna:39' -S 1000000 -f 770.406250e6 -o 15550 -x 02 -q 52 -T trunk.tsv -2 -U 2> stderr.2
STDERR file:
gr-osmosdr v0.1.x-xxx-xunknown (0.1.5git) gnuradio 3.7.11
built-in source types: file osmosdr fcd rtl rtl_tcp uhd plutosdr miri hackrf bladerf rfspace airspy airspyhf soapy redpitaya freesrp
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!
[R82XX] PLL not locked!
Using two-stage decimator for speed=1000000, decim=10/4 if1=100000 if2=25000
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:pen_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[1], do_nocrypt[0]
metadata update not enabled
audio device: default
Allocating 15 zero-copy buffers
1561862163.880817 PCM underrun
1561862375.011933 PCM underrun
1561862406.744887 PCM underrun
1561862411.071818 PCM underrun
1561862669.531946 PCM underrun
1561862708.089488 PCM underrun
1561862712.942487 PCM underrun