A reconfigurable radio communications system is disclosed. The system comprises a digital data bus, a control bus, and first and second reconfigurable radio communication units responsive to the digital data bus and the control bus. Each of the first and second reconfigurable radio communication units further include a first and a second multifunction radio transceiver, with the first reconfigurable radio communication unit responsive to at least a first antenna, and the second reconfigurable radio communication unit responsive to at least a second antenna. Each of the first and the second multifunction radio transceivers of the first and the second reconfigurable radio communication units are operable to simultaneously transmit and receive data on at least two separate channels from different frequency bands. Within the system, one of the multifunction radio transceivers is automatically reconfigurable to maintain radio communication functions previously performed by a faulted multifunction radio transceiver.