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Yeah, you need a attachment, its basically a SDR but still.

Archive: https://archive.today/XchYM

From the post:

>kv4p HT is a homebrew VHF radio that makes your phone capable of voice and text communication completely off-grid with at least a Technician class amateur radio license. The radio simply plugs into the USB C port on your Android smartphone and transforms it into a fully-fledged handheld radio transceiver. It's completely open source (GPL3): the Android app, ESP32 firmware, PCB designs, and 3D printer files.

Yeah, you need a attachment, its basically a SDR but still. Archive: https://archive.today/XchYM From the post: >>kv4p HT is a homebrew VHF radio that makes your phone capable of voice and text communication completely off-grid with at least a Technician class amateur radio license. The radio simply plugs into the USB C port on your Android smartphone and transforms it into a fully-fledged handheld radio transceiver. It's completely open source (GPL3): the Android app, ESP32 firmware, PCB designs, and 3D printer files.
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[–] • 1 pt

The technician's license isn't hard to get anymore, you don't need code or anything. Plenty of practice tests out there you can use if you're interested.

[–] • 1 pt

Didn't know that either. Thought it was a difficult and expensive hobby. Looks like I can just get a handheld and listen without a license. Very good. I'll probably pick one up soon.

[–] • 1 pt

At least in the USA, there aren't any restrictions on just owning and listening to the equipment. It's kind of encouraged so you go "Hey, I'd like to do that too."

I've used this site in the past: https://hamexam.org/

[–] • 1 pt

That looks like an amazing resource. Thank you for that.