op25

Hi all, How can I feed a .bin file capture (from DSD-FME or OP25) to be transmitted via hackrf_transfer? From what I read, hackrf_transfer file format shall be signed 8-bit integer IQ samples. However, I don't know what the capture format is on these two softwares is and it doesn't seem to be...

@boatbod I found something on this before in this forum but cant find it now. Plus I have some new questions; Can I change the default TG priority value (now at 3) in a *.json somewhere? Currently what is the full range 0-9, 1-10 or even 0-99 or 1-100? Right now the default is set to 3, for...

Thanks to k4jk, op25 boatbod now has long awaited browser audio capability when running multi_rx with the new ui. Behind the scenes, websockets are used as the transport, and it is entirely possible to configure a websocket stream in parallel with either local audio or an icecast/liquidsoap...

I tried using the instructions found here, but I couldn't completely follow the instructions there. For instance, he is running OP25 on a headless Raspberry Pi, I am running OP25 on a Lenovo ThinkCentre running Ubuntu 24. He is using a VNC server & FTP file transfer to control the Raspberry Pi...

Hey everyone, I’ve been playing with SDR and programming for about 5 or 6 years now. Like most of you, I’ve navigated the "pain in the ass" process of getting OP25 and Trunk-Recorder running. I’ve become pretty good at manual setups over the years, but for some reason, getting Trunk-Recorder to...

Hi folks. Been trying to figure this one out for some time and am completely stumped; assistance would be greatly appreciated. Environment: Debian 13 (Trixie) on x64, op25-boatbod from the gr310 branch, Pulseaudio, NESDR SMArt v5. This machine runs headless with Openwebrx+ and multiple SDRs...

I'm having issues monitoring two sites. One site is fine, but both sites are a no-go. Is there a base template for the config.json file to follow? When I try this, it gives an rx_channels error. Any help would be appreciated. { "devices": [ { "args": "rtl=0"...

I have installed op25 but I get a no attribute “get gain names” error… I was I guess completely unaware that op25 doesn’t have a gui. What programs can decode p25 phase 2 that can run on a raspberry pi 3 that have a easy to navigate gui? Thank you! Please help

New to radio and am trying to understand what my setup is actually doing. I have an RTL-SDR and have some success decoding P25 with SDRTrunk and Boatbod OP25. If my understanding is correct, SDRTrunk can monitor the entire available bandwidth around some frequency of the SDR dongle and if...

Hi, I'm trying to monitor a VHF system in my region with a hackrf one but I am able to decode signals. I have it connected to a VHF antenna and am able to get a clean decode with a regular rtl-sdr device (NESDR Smart 5). My gains settings are "gains": "RF:0,IF:40,BB:36". We can clearly see that...

Hi everyone Sorry if this has been brought up before, Ive searched but everything I've tried has not worked. Ive had boatbod's op25 working quiet well with a rtl-sdr v3, however I have not been able to get the alpha tags working. i have tried changing the file with a text editor and libreoffice...

Hey there, I was testing the P25 Tx support of OP25 with a hackrf but I am encountering strange behavior. I am able to transmit "something" with the hackrf using the cmd ./dv_tx.py -p p25 --args 'hackrf' -f ./test.wav -Q 145000000 -q 0 --gains 'RF:0,IF:20' inspired by Matt Ames (@MattSR): On...

DES-OFB traffic decryption (known key) is now supported on boatbod's fork. How to get it working? - Define key variables (16 hex chars) in the key file (such as example_keys.json). Make sure to specify 0x81 as algid. - Authorize encrypted traffic sync by specifying crypt_behavior as 0 or -1...

Hi, I've recently gotten the RTL-SDR V4, and I have everything setup "correctly", however every time I run the command ./rx.py --args 'rtl' -N 'LNA:47' -S 2500000 -x 2 -f 857.2625e6 -o 17e3 -q 2 after a reset of the system or closure of the terminal I get the message ModuleNotFoundError: No...

2024.Sep.02 Pursuing clarification on the current op25 Raspi build instructions. Raspi 4B with full 64-bit debian OS [Bookworm] image with: cmake [v3.25.1] gnuradio-dev [v3.10.5.1-3] gqrx [v2.17.5-4-g25fdbb5] Is this op25 install procedure correct ? $ git clone GitHub - boatbod/op25: Fork of...

Hi- I'm working on getting op25 set up to monitor a couple of local agencies which recently switched over from NBFM to non-trunked P25 Phase I systems. I have 2 RTL-SDR dongles connected to a Raspberry PI to initially capture 2 agency channels. My first step was to get two separate instances...

I have been trying all day to get this to work on a pi 4 i have installed it and deleted it 3 times but i keep getting this same screen. when i first install op25 it will kinda work it just doesn't show the tsbks counting and it won't show the NAC. it starts this when i edit the trunk.tsv and...

This is a project that I've been working on for a long time now on and off. It's nowhere near done and I have a lot left to re-implement but here it goes. The OP25MCH or OP25 Mobile Control Head is an Android app that is written in Python with Kivy that allows you to remotely control an...

Hello, I am running OP25 on Ubuntu 22.04 and when I run my local P25 Phase II system, empty voice channels appear when synced to a P25 Phase II patch talkgroup. I can confirm that the voice channels are not part of the system/site. I managed to record how these voice channels appear. I was...

I'm trying to run a weird experiment where I have a recording of an entire segment of a voice channel of a p25 system in my area and I'm wondering if I can demodulate it with op25. This is my current setup that is not working does anyone have any suggestions or am I doing this all wrong? I want...