Wireless receiver

A wireless receiver comprising:

• an RF muting circuit that opens and closes a signal line of a demodulated signal according to a carrier strength level of a received RF signal;
• a noise muting circuit that opens and closes the signal line of a demodulated signal according to a noise level in the demodulated signal;
• an RF signal attenuation circuit that attenuates a level of the RF signal that is handled in an RF amplifier circuit;
• and
• a reception mode switching unit capable of simultaneously selecting at least any two values from those comprising one of a plurality of predetermined operating levels in the RF muting circuit, one of a plurality of predetermined operating levels in the noise muting circuit, and one of a plurality of predetermined amounts of attenuation in the RF signal attenuation circuit,
• wherein the RF muting circuit in the wireless receiver includes a first comparison circuit which compares an RSSI signal corresponding to an electric field strength of the received RF signal with a first set value or a second set value both of which are different to each other;
• and a first selection switch which switches supply of the first set value or the second set value to the first comparison circuit;
• the noise muting circuit includes a second comparison circuit which compares noise level in the demodulated signal with a third set value or a fourth set value both of which are different to each other;
• and a second selection switch which switches supply of the third set value or the fourth set value to the second comparison circuit.