Ideally, if you dont care about looks, all you need is a Raspberry Pi 3B+, keyboard/monitor/screen, Rtl-sdr, and a wire.

The wire is hooked up to GPIO 4 and used in conjunction with RPITX library.

The Rtlsdr allows receiving radio signals.

The only broken thing right now, is that changing GPU clock frequencies does "weird" things to the onboard wifi (unsurprising).

My next step will be making 2 scripts: 1 to install a SigInt tooling, and 2 is to update said tooling.