What Is “Pilotone & Noise Lock” Squelch Control?
“Pilotone & NoiseLock” is MIPRO’s original squelch control circuitry, designed specifically to prevent outside interference from affecting the receiver and causing unwanted noise in the wireless system. These two squelch control circuits, used in conjunction with the squelch gain control, can effectively prevent noises from a wide variety of electronic sources. The “Pilotone” system adds a fixed modulation signal to the microphone’s transmitting signal. A “Pilotone” authenticating circuit in the receiver ensures that its output circuit is activated only when a “Pilotone” encrypted signal is received. Signal that is not “Pilotone” encrypted will not activate the output circuit, even if the operating carrier frequency matches. The “NoiseLock” circuit is designed to recognize sudden outside interference signals and prevent the irritating loud noises caused by such interference from coming through the sound system. Momentarily, a loud noise from this interference may come through the syste
