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robotastic / trunk-recorder

Records calls from a Trunked Radio System (P25 & SmartNet)
GNU General Public License v3.0
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Not Receiving Anything #257

Closed ZL1LAC closed 5 years ago

ZL1LAC commented 5 years ago

I don't seem to be picking anything up. There doesn't seem to be any errors so I'm not sure. { "sources": [{ "center": 1414000000, "rate": 2048000, "error": 0, "squelch": -50, "gain": 49, "debugRecorders": 0, "digitalRecorders": 4, "modulation": "qpsk", "driver": "osmosdr", "device": "rtl=0" }], "systems": [ { "type": "conventional", "channels": [1414000000], "shortName": "EAS", "callLog": true, "audioArchive": true } ], "captureDir": "/home/pi/radio/" }

frameshift18 commented 5 years ago

"center": 1414000000, is 1.414Ghz, do you have an extra 0? are you recording 2m analog amateur radio?

ZL1LAC commented 5 years ago

Ops, it's meant to be 141.400 MHz.

frameshift18 commented 5 years ago

If you want to record analog conventional you need to use "analogRecorders" instead of "digitalRecorders" and don't put the modulation line. Since you only have 1 freq in the channels array you just need 1 Recorder.

ZL1LAC commented 5 years ago

What 141.400 MHz be for the config? 1414000?

frameshift18 commented 5 years ago

what you had minus a 0, so 141400000, its in hertz

frameshift18 commented 5 years ago

Also fair warning the analog recording on this is a little finicky. Your'e mostly likely gonna have to mess with your squelch setting or you'll get a bunch of random static recordings. Also the analog recorder works a little different than the digital so its going to act like its constantly recording but when the squelch breaks and there is traffic it will just save the audio after the squelch broke. Also the timestamps on the analog recordings seem to be offset by one recording.

ZL1LAC commented 5 years ago

Roger that.

ZL1LAC commented 5 years ago

What squelch setting do you recommend?

frameshift18 commented 5 years ago

It all depends on your gain and strength of the signal you're wanting to receive. Roughly between -30 and -60 but it varies. You'll just have to mess with it.