OP25: Difference between revisions
Jump to navigation
Jump to search
m →P25 (EBRCS): talkgroups link |
m SF |
||
| Line 21: | Line 21: | ||
Note: this tends to come in garbled, you also have to be in range of the actual signal, there are several sources around the bay area, this is specifically for the Southwest Region, which covers a large radius from around Union City. Nudging the frequency '<' or '>' from the terminal seems to help lock in a clear demodulation. | Note: this tends to come in garbled, you also have to be in range of the actual signal, there are several sources around the bay area, this is specifically for the Southwest Region, which covers a large radius from around Union City. Nudging the frequency '<' or '>' from the terminal seems to help lock in a clear demodulation. | ||
== P25 (San Francisco) == | |||
<pre>pi@pisdr:~/op25/op25/gr-op25_repeater/apps | |||
$ ./rx.py --args 'rtl' -N 'LNA:47' -S 2500000 -x 2 -f 769.84375e6 -o 17e3</pre> | |||
<pre>NAC 0x2b0 WACN 0xbee00 SYSID 0x2bb 769.843750/799.843750 tsbks 3386 | |||
voice frequency 769.531250 tgid(s) 6002 None 11.0s ago count 194 | |||
</pre> | |||
Revision as of 13:58, 14 June 2020
Pi 3 Setup
Install current version (9) of debian flavor linux
Pre-built image with SDR tools, does not have OP25 installed: https://pisdr.luigifreitas.me
P25 (EBRCS)
Get the code and run the install script to build and install: https://github.com/AaronSwartzDay-SSP/op25
Configure trunk.tsv to set proper talk group (0x1f1) and mode
rx.py --args 'rtl' -N 'LNA:47' -S 2500000 -x 2 -f 772.8437e6 -o 17e3 -T trunk.tsv -V -2 -U 2> stderr.2
Talk groups broadcasting on this network: https://www.radioreference.com/apps/db/?sid=5317
Note: this tends to come in garbled, you also have to be in range of the actual signal, there are several sources around the bay area, this is specifically for the Southwest Region, which covers a large radius from around Union City. Nudging the frequency '<' or '>' from the terminal seems to help lock in a clear demodulation.
P25 (San Francisco)
pi@pisdr:~/op25/op25/gr-op25_repeater/apps $ ./rx.py --args 'rtl' -N 'LNA:47' -S 2500000 -x 2 -f 769.84375e6 -o 17e3
NAC 0x2b0 WACN 0xbee00 SYSID 0x2bb 769.843750/799.843750 tsbks 3386 voice frequency 769.531250 tgid(s) 6002 None 11.0s ago count 194
Resources
- https://www.hagensieker.com/wordpress/2018/07/17/op25-for-dummies/
- https://www.sigidwiki.com/wiki/Project_25_(P25)
- https://drive.google.com/file/d/1siOQ2AIjDnvdMPWu7WqDhQKSByg7HIRJ/view
- https://hackaday.com/2019/12/20/all-your-sdr-software-in-a-handy-raspberry-pi-image/
- https://github.com/AaronSwartzDay-SSP/op25/blob/master/README-rpi3-liquidsoap