- Joined
- Dec 18, 2003
- Messages
- 164
Thought I'd hit up the local brain trust first before heading to the SDR forum:
I've been providing the traditional feed for LC-CFRS for years (currently via a Pi 3 and RTL-STL v3), and recently found the funds to expand with the hope of providing the system to the Calls platform (since the previous source apparently stopped).
I'm having an issue that I hope is operator error (and thus an easy fix). I'll provide more details as needed, but the short version is this:
Running the current Broadcastify image on a new Raspberry Pi 5 with a RTL-SDL.com v4. I'm able to get things working fine using sdrtrunk (which leads me to believe that the hardware and location are all sufficient). However, when starting trunk-recorder it seems to start OK but then fails with:
(error) [loudoun] Control Channel Message Decode Rate: 0/sec, count: 1
(error) P25 Parse error, s: Len: 0
My best guess is that it's something wrong in the config file. I'm a Linux sysadmin, so I'm comfortable there, but I can just barely spell "RF", so I don't really know what I'm doing and all my trial and error over the past few days has failed. I was unable to get anything useful from GQRX (as suggested by the truck-recorder config site), again perhaps due to my lack of understanding.
For others that end up here, a few links that I found helpful (or perhaps led me astray):
Center Frequency Finder: https://alertapi.alertpage.net/sdr/
Trunk-recorder Configurator: GitHub - AlertPageSDR/tr_configurator: Tunk-Recorder config auto generation with Radio Reference
I've been providing the traditional feed for LC-CFRS for years (currently via a Pi 3 and RTL-STL v3), and recently found the funds to expand with the hope of providing the system to the Calls platform (since the previous source apparently stopped).
I'm having an issue that I hope is operator error (and thus an easy fix). I'll provide more details as needed, but the short version is this:
Running the current Broadcastify image on a new Raspberry Pi 5 with a RTL-SDL.com v4. I'm able to get things working fine using sdrtrunk (which leads me to believe that the hardware and location are all sufficient). However, when starting trunk-recorder it seems to start OK but then fails with:
(error) [loudoun] Control Channel Message Decode Rate: 0/sec, count: 1
(error) P25 Parse error, s: Len: 0
My best guess is that it's something wrong in the config file. I'm a Linux sysadmin, so I'm comfortable there, but I can just barely spell "RF", so I don't really know what I'm doing and all my trial and error over the past few days has failed. I was unable to get anything useful from GQRX (as suggested by the truck-recorder config site), again perhaps due to my lack of understanding.
Code:
{
"ver": 2,
"sources": [
{
"center": 852728125,
"rate": 4800000,
"ppm": 1,
"gain": 0,
"agc": false,
"digitalRecorders": 11,
"analogRecorders": 0,
"driver": "osmosdr",
"device": "rtl=0"
}
],
"systems": [
{
"control_channels": [
853912500,
853050000,
853662500,
853775000
],
"type": "p25",
"digitalLevels": 1,
"talkgroupsFile": "",
"shortName": "loudoun",
"modulation": "qpsk",
"hideEncrypted": false,
"uploadScript": "",
"talkgroupDisplayFormat": "id_tag",
"compressWav": true,
"rrsysid": "6524",
"rrsiteid": "16224",
"broadcastifyApiKey": "---",
"broadcastifySystemId": ----
}
],
"broadcastifyCallsServer": "https://api.broadcastify.com/call-upload",
"frequencyFormat": "mhz",
"captureDir": "/home/pi/bcfy/audio",
"controlWarnRate": 2,
"callTimeout": 1,
"newCallFromUpdate": false
}For others that end up here, a few links that I found helpful (or perhaps led me astray):
Center Frequency Finder: https://alertapi.alertpage.net/sdr/
Trunk-recorder Configurator: GitHub - AlertPageSDR/tr_configurator: Tunk-Recorder config auto generation with Radio Reference
