A receiver provided in a mobile station communicating with at least two different types of base stations. In the receiver of the mobile station, a controller generates frequency channel control data for base stations at base station search times, analyzes signals received from the base stations through set frequency channels, and registers the base stations. A radio frequency (RF) module sets reception RF bands in response to the generated frequency channel control data, and down-converts signals received in the set reception RF bands. A searcher measures intensities of signals output from the RF module, and outputs a result of the measurement to the controller. A display unit indicates the base stations registered by the controller.