PTT: See Controls and Components → Boom! Box Hand Controls → Right Hand Control Audio Functions. Press the PTT switch to transmit over CB or intercom. Both the rider and passenger microphones are live. Intercom can also be operated by voice activation (VOX).

Squelch (SQ+/SQ-): Raise squelch (SQ+) to prevent noise or unwanted weak signals from unmuting the CB. Lower squelch (SQ-) to a level that allows desired CB signals to unmute the CB.