The Heli-Coder III (HCIII) is a COFDM digital microwave transmitter system that will downlink live video from an aircraft. The system features BMS’ new CTxx40ARINC transmitter and HCP-50-HCII control panel. A pioneer in Digital COFDM Technology, the Heli-Coder III offers low delay, 4:2:0/4:2:2 MPEG-2 encoding and decoding, RF amplification, and COFDM modulation for dependable and high-quality SD or HD video transmission. Standard features include ASI In/Out, SDI and Video Input. A data wayside channel transmits GPS data. An optional dedicated GPS receiver may be added that allows automatic tracking by specially equipped ground stations.