In a television tuner, a predetermined bias voltage is applied to the anode of
a first switching diode. A power supply voltage is applied to the collector of
a switching transistor via a power supply resistor, and the emitter of the switching
transistor is grounded. The collector of the switching transistor is connected
to an input terminal of a first FET via a first resistor. The first switching diode
and the switching transistor are both switched on or off correspondingly to whether
a television signal in the UHF band is to be received or a television signal in
the VHF band is to be received.
