Patent ID: 6909885

Claim:
An RF switch for selectably coupling a locally-generated RF signal or an antenna RF signal to a broadcast radio receiver, said RF switch comprising: a local RF input for receiving said locally-generated RF signal; an antenna RF input for receiving said antenna RF signal responsive to a radiated RF broadcast in a broadcast band; a resonant network having a first node coupled to said antenna RF input and having a resonant frequency corresponding to said broadcast band; a first relay having a first output selectably coupled to either said antenna RF input or a second node of said resonant network; and a second relay having a second output selectably coupled to either said local RF input or said first output of said first relay; wherein when said second relay selects said local RF input then said first relay selects said second node of said resonant network and when said second relay selects said first output of said first relay then said first relay selects said antenna RF input.