In actual fact, broadcasting static during a call is an indication that the signal strength is degrading (or that there is no signal coming through at all). When signal power degrades sufficiently, the static noise emerges.
When there is no communication coming through, it is a complete different story. A 2 way radio has what’s known as a ‘squelch’ control circuit that keeps tabs on the signal power. The squelch circuit will mute the amplifier the moment it realizes that there is no signal coming through into the device. It’s, essentially, a similar function as your TV has when it cuts off an unavailable network after a fixed time. However, within the moments before your two way radio ‘squelches’ the signal, you will hear static, or ‘white noise’ as it is also named. Continue reading