The 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 multipath. Other optional high order modulation techniques are available through software changes, making this transmitter well suited to changing operational needs. Additionally, this unit provides an integrated GPS data interface that reduces the components needed to integrate the HC4 into tracking systems. The HC4 provides everything required to achieve 10 W output power in an ultra-compact case. The remote control panel allows the electronics to be mounted within the avionics bay with full control from the flight deck.