"COMMUNICATION ENERGY ENERGY CONSERVATION METHOD AND METHOD". A communication unit (10) having at least one first receiver (11) and a second receiver (12) is described. The latter typically consumes more energy than the former during ordinary operation. According to one version, a communication unit may use the lowest power receiver to detect power on a monitored channel while the second receiver is held in reduced power mode of operation. Upon detection of the absence of channel activity, the second receiver can be restored to normal operation to perform these activities as they are then currently required.
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