PURPOSE: To eliminate the need for a band switching operation in a channel selection mode by operating a band changeover switch and a tuning voltage supplying device with coupling to each other by means of a single operation member.

CONSTITUTION: The tuning voltage 32 generated from a power supply circuit 24 is supplied to resistance films 41∼43 in the form of the low band tuning voltage, the high band tuning voltage and the UHF tuning voltage respectively. Each tuning voltage is extracted through a common electrode 44 via a contact 54a and supplied to a tuner 22. A contact 54b interlocks the contact 54a to scan conductors 51 and 52 of a band changeover switch circuit and supplies the band switch voltage to the tuner 22. A band switching operation is not required owing to a coupled operation between contacts 54a and 54b. Thus the continuous tuning is possible.