Abstract: An accessory system (202, 402, 502) for a portable radio transceiver (200) includes an accessory device (206) which includes a speaker and/or a microphone disposed external of the portable radio transceiver. A cable (204) containing two or more conductors is provided for operatively connecting the accessory device to the portable radio transceiver. At least one antenna (210, 212) for the portable radio transceiver is integrated within the cable. When the accessory system is used with a multi-band portable radio transceiver, two or more antennas can be included in the cable, each optimized for operation on a particular RF frequency band.

Abstract: An accessory system (202, 402, 502) for a portable radio transceiver (200) includes an accessory device (206) which includes a speaker and/or a microphone disposed external of the portable radio transceiver. A cable (204) containing two or more conductors is provided for operatively connecting the accessory device to the portable radio transceiver. At least one antenna (210, 212) for the portable radio transceiver is integrated within the cable. When the accessory system is used with a multi-band portable radio transceiver, two or more antennas can be included in the cable, each optimized for operation on a particular RF frequency band.

Abstract: The present invention provides increased geographical coverage and system capacity for mobile/portable radio transceivers using adjacent and typically separate radio communication frequency bands. A radio that transceives in just one frequency band is adapted to provide a configurable duplexing arrangement to permit communications in extended frequency bands. Duplexing circuitry is connected between the radio antenna and the radio transmitter and receiver. Depending upon the mode of operation of the radio transceiver, switches are selectively operated for variously configuring the antenna, duplexer circuitry, receiver, and transmitter to permit communications in a first or a second set of transmit/receive frequency bands. In one preferred example embodiment, only a single duplexer is employed connected to the antenna and transceiving circuitry through plural switches.