Abstract: A control unit tunes a tuner to a broadcasting station as determined by frequency data stored in a memory and then to another broadcasting station as determined by other frequency data stored in the memory while it applies a muting pulse to a muting circuit to mute an output from the tuner for a relatively short time. Subsequently, the tuner is tuned to that station having a higher reception level. An audio level sensor connected to the tuner is connected to one input of an AND gate whose other input is supplied with an output from the control unit originating from a command muting signal. When the sensor senses that an audio level of the tuner's output is approximating a zero level, the sensor supplies an output to the AND gate so as to permit the control unit to apply the muting signal to the muting circuit.

Abstract: A receiver which includes: a first memory including one set of nine data areas for storing frequency data for broadcast stations broadcasting a common broadcasting program at difference frequencies for each of a plurality of station selecting keys, a second memory including a first and a second data areas for storing the frequency data transferred from that set of data areas of the first memory selected by one of the keys, and a tuner tuned to a first broadcast station determined by the frequency data in the first data area of the second memory through a tuning voltage generator. By temporarily muting the first station, a second broadcast station is compared with the first station as to the average of the sensed reception level. This process is repeated with the frequency data in the selected set of the data areas of the first memory after their successive transfer to the latter. The tuner is then tuned to that station having a reception level which is higher than that of the first station.