A few hundred dollars secured you an FM walkie-talkie through which you could chat ... most licencees will now own a Baofeng UV5 or similar radio. The FCC though are not entirely happy with ...

For the hardware, [KP4TR] is using a Raspi, a Baofeng BF-888s 400MHz – 470MHz walkie-talkie radio, a USB sound card, and a pair of transformers for the 5V and 3.7V lines. All this is tucked away ...