30 Basic operationHearing faint and noisy signalsYour radio’s squelch allows the radio to unmute only whenthe strength of the incoming signal is above a predeterminedthreshold. This means that only signals of reasonableintelligibility are made audible. To make faint and noisy signalsaudible, use the squelch override function to unmutethe radio.To activate squelch override and unmute the radio:■ Press the function key programmed for squelch override.While squelch override is on, the green LED flashescontinually.Squelch override remains on until there is a furtherkey press.Turning squelch override on and off by usingthe function key programmed for monitorThe function key programmed for monitor may beprogrammed so that a short key press turns monitor on, and along key press turns squelch override on.To activate squelch override and unmute the radio:■ Press and hold the function key programmed for monitor.While squelch override is on, the green LED flashescontinually.Squelch override remains on until there is a further longkey press.