I am working with a friend on a platform to collect all local GMRS and FRS radio from a discreet backpack rig, for later forensic analysis, as part of future Antifa movements.
This is a proof of concept made out of parts I had lying around, but I can grab GMRS 1-7,15-22 and many repeaters and the entire kit fits inside a large adult backpack, with no external power.
The Pi itself has no problem dumping this over USB3 to a fast SSD, but you need a big SSD and active cooling on the USB controller otherwise it janks out and throttles.
Once I have some GMRS or FRS captures, I will work on live 1 channel demod, which should be modestly easy to do. A web interface for discreet mobile control whole walking about is also a good call.
Longer term, I want to see if we can recognize if a channel is in use without full demodulation.
I'll start optimizing it to drop down the cost of the rig as well, as this is probably an essential toolkit against future militarized-but-poorly-educated fascist action.
US Police Corruption
A lot of non US people won't know about this, but there is a system of cards that police unions hand out throughout the US. The cards are called, "PBA Cards". They're intended for police to hand to family members and friends so that they can present the card at traffic stops. The police unions claim they're not a pass for breaking the law, but in practice that's all they are.
The police, and many Americans, don't understand how this is a problem.
read more about it in this post:
(Tails is a live operating system that aims at preserving your privacy and anonymity.)
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