A multifunction radio for receiving radio signals from and sending transmissions to multiple radio systems comprises an antenna and a transmit/receive switch coupled to the antenna. The radio further comprises a receiver section coupled to the transmit/receive switch and configured to receive radio signals from one or more multiple radio systems. The receiver section includes a digital downconverter configured to digitally downconvert radio signals sent from one or more of the multiple radio systems and a digital signal processor coupled to the digital downconverter for processing the downconverted signals. A transmitter section is coupled to the transmit/receive switch and configured to generate a transmission signal for reception by one or more of the multiple radio systems.