OperationRangeAutomatic Squelch FeatureThe UH405SX-2NB is equipped with an Automatic Squelch system whichmutes the audio in the presence of weak transmissions and unwanted noise.MonitorThis feature enables users to listen in for weak signalson the current channel at the press of a button.To use monitor• Press and hold Volume or for 2 seconds. When Monitor is on youwill hear noise if there is no signal.• For continuous listening, the receiver circuit will stay open, letting in boththe noise and weak signals.• To return to normal receive mode press and hold Volume or for 2seconds or press key once.Reduced RangeMaximum Range6 UHF CB TransceiverUNIDEN UH405SX-2NB

getting started

belt clip

selecting a channel

to transmit and receive

Uniden UH405SX-2NB Owner's Manual