The Heli-Coder 4 (HC4) is a single box solution containing everything needed for high-quality, reliable transmission.
This includes the video encoder, modulator, up-converter and high-power amplifier.
Standard COFDM modulation offers excellent performance in urban and non-line of sight environments with significant multi-path. Other optional high order modulation techniques are available through software changes, making this transmitter well suited to changing operational needs.

The HC4 provides an integrated GPS data interface that reduces the components needed to integrate the HC4 into tracking systems. The transmitter provides 10W output power in a light and compact case. In combination with the DLC50 control panel, the HC4 can be mounted within the avionics bay with complete configuration and operational control from the flight deck.