Black Box VHF/DSC Marine Transceiver. The IC-M400BB 'black box' marine transceiver, can be installed out of sight, which is important, where space is at a premium. The IC-M400BB is controlled by the Icom HM-195 Commandmic. The HM-195 allows operation of all radio functions including DSC, radio, foghorn, hailer horn from the cockpit or fly bridge. The HM-195 utilises the same user soft key interface used on Icom’s latest range of marine radios making control of the radio very straight forward.