In actual fact, radio static during a call on is an indication the signal power is degrading (or that there’s no sound coming through whatsoever). When signal strength degrades sufficiently, the static noise emerges.
When there is no communication coming through, it’s a slightly different story. A two way radio has what’s renowned as a ‘squelch’ control circuit that maintains tabs on the signal power. The squelch circuit will mute the speaker as soon as it realizes that there is no signal coming through in the radio. This is, basically, the identical function as your TV has as soon as it cuts off an unavailable network after a set time. Though, within the moments before your walkie talkie ‘squelches’ the sound, you will hear static, or ‘white noise’ as it’s also known as. Continue reading How to get rid of the static signal in your walkie talkie?