doabbs
Member
Background:
I've been using an old Windows laptop for last 10+ years to provide a feed for our local police/fire/ems/public works using my RadioShack Pro-106. I have multiple Raspberry Pi's around the house for various projects like Home Assistant, Pi Hole, WireGuard VPN, etc and figured it was time to retire the old standalone Windows box. So I quickly spun up a new install of Raspberry PI OS running the latest version of Debian Bookworm, installed a USB sound card, installed DarkIce and was off to the races.
We do not have any Trunked Radio systems in this part of New Hampshire, all police departments are using P25 Conventional. Fire/EMS usually analog with radios capable of going digital if needed to interop.
Fast forward a month later and I noticed that our local police department audio is choppy. You could only make out some words in a sentence. Turns out they had moved to a Simulcast system, still not trunked. Doing some quick research I realized the old RadioShack Pro-106 would have to be retired if I want to listen to our local police.
Problem:
I've done a ton of reading up on the topic and figure since I have an RTL SDR sitting around I could use that to solve for the simulcast problem by moving away from the sound card / line in approach and just use my RTLSDR and Pi.
I've tinkered with setting up a new install of Bookworm
Researched that there may be an issue with LiquidSoap and Bookworm but looks like there is a workaround with downgrading ffmpeg
Installed latest build of Boatbods OP25 and GNURadio 3.10.
However all the guidance I can find is for folks using BoatBods OP25 build to receiving trunked systems.
Question:
Is there any wiki or guides on how to monitor conventional P25 and analog systems with OP25. It would be around five P25 Conventional Systems using NAC, three analog frequencies using CTCSS tones?
Is boatbod OP25 the correct software or should I be looking at something else.
I've been using an old Windows laptop for last 10+ years to provide a feed for our local police/fire/ems/public works using my RadioShack Pro-106. I have multiple Raspberry Pi's around the house for various projects like Home Assistant, Pi Hole, WireGuard VPN, etc and figured it was time to retire the old standalone Windows box. So I quickly spun up a new install of Raspberry PI OS running the latest version of Debian Bookworm, installed a USB sound card, installed DarkIce and was off to the races.
We do not have any Trunked Radio systems in this part of New Hampshire, all police departments are using P25 Conventional. Fire/EMS usually analog with radios capable of going digital if needed to interop.
Fast forward a month later and I noticed that our local police department audio is choppy. You could only make out some words in a sentence. Turns out they had moved to a Simulcast system, still not trunked. Doing some quick research I realized the old RadioShack Pro-106 would have to be retired if I want to listen to our local police.
Problem:
I've done a ton of reading up on the topic and figure since I have an RTL SDR sitting around I could use that to solve for the simulcast problem by moving away from the sound card / line in approach and just use my RTLSDR and Pi.
I've tinkered with setting up a new install of Bookworm
Researched that there may be an issue with LiquidSoap and Bookworm but looks like there is a workaround with downgrading ffmpeg
Installed latest build of Boatbods OP25 and GNURadio 3.10.
However all the guidance I can find is for folks using BoatBods OP25 build to receiving trunked systems.
Question:
Is there any wiki or guides on how to monitor conventional P25 and analog systems with OP25. It would be around five P25 Conventional Systems using NAC, three analog frequencies using CTCSS tones?
Is boatbod OP25 the correct software or should I be looking at something else.
