A multichannel redundant radio unit device comprising: a left radio unit comprising at least two left very high frequency radios (561, 563), each of the at least two left VHF radios comprising a left VHF radio transceiver, the left VHF radio transceiver comprising a left wideband multi-channel receiver configured to receive all voice channels and data channels in an aeronautical VHF communication band, the at least two left VHF radios configured to communicate on at least two voice channels (511, 513) and at least one data channel, wherein if at least one, but less than all, of the at least two left VHF radios fails, a still functioning left hot standby VHF radio of the at least two left VHF radios provides functionality of the at least two left VHF radios; a right radio unit comprising at least two right VHF radios (571, 573), each of the at least two right VHF radios comprising a right VHF radio transceiver, the right VHF radio transceiver comprising a right wideband multi-channel receiver configured to receive all voice channels and data channels in an aeronautical VHF communication band, the at least two right VHF radios configured to communicate on the at least two voice channels and the at least one data channel, the at least two right VHF radios communicatively coupled to the at least two left VHF radios via a bi-directional serial bus, wherein if at least one, but less than all, of the at least two right VHF radios fails, a still functioning right hot standby VHF radio of the at least two right VHF radios provides functionality of the at least two right VHF radios; radio frequency switches configured to: communicatively couple the at least two left VHF radios to both a left antenna and a right antenna; and communicatively couple the at least two right VHF radios to both the left antenna and the right antenna; wherein if all of the at least two left VHF radios fail, the at least two right VHF radios are configured to provide the functionality of the at least two left VHF radios; wherein if all of the at least two right VHF radios fail, the at least two left VHF radios are configured to provide the functionality of the at least two right VHF radios; wherein voice audio and data are routed to and from each of the at least two left VHF radios and each of the at least two right VHF radios. a left radio unit comprising at least two left very high frequency radios (561, 563), each of the at least two left VHF radios comprising a left VHF radio transceiver, the left VHF radio transceiver comprising a left wideband multi-channel receiver configured to receive all voice channels and data channels in an aeronautical VHF communication band, the at least two left VHF radios configured to communicate on at least two voice channels (511, 513) and at least one data channel, wherein if at least one, but less than all, of the at least two left VHF radios fails, a still functioning left hot standby VHF radio of the at least two left VHF radios provides functionality of the at least two left VHF radios; a right radio unit comprising at least two right VHF radios (571, 573), each of the at least two right VHF radios comprising a right VHF radio transceiver, the right VHF radio transceiver comprising a right wideband multi-channel receiver configured to receive all voice channels and data channels in an aeronautical VHF communication band, the at least two right VHF radios configured to communicate on the at least two voice channels and the at least one data channel, the at least two right VHF radios communicatively coupled to the at least two left VHF radios via a bi-directional serial bus, wherein if at least one, but less than all, of the at least two right VHF radios fails, a still functioning right hot standby VHF radio of the at least two right VHF radios provides functionality of the at least two right VHF radios; radio frequency switches configured to: communicatively couple the at least two left VHF radios to both a left antenna and a right antenna; and communicatively couple the at least two right VHF radios to both the left antenna and the right antenna; communicatively couple the at least two left VHF radios to both a left antenna and a right antenna; and communicatively couple the at least two right VHF radios to both the left antenna and the right antenna; wherein if all of the at least two left VHF radios fail, the at least two right VHF radios are configured to provide the functionality of the at least two left VHF radios; wherein if all of the at least two right VHF radios fail, the at least two left VHF radios are configured to provide the functionality of the at least two right VHF radios; wherein voice audio and data are routed to and from each of the at least two left VHF radios and each of the at least two right VHF radios.