... 2.5/6/7/8M ) encryption MV2000TBHF/MV2025TBHE Backpack Wireless COFDM Video Transmitter Receiver:type one: portable receiverType two ... range is up to 80km The Knapsack Digital Wireless Video Transmitter adopts the latest technologies of COFDM modulation ... 8A/DC12.5VRS232 Control InterfaceStandard RS232 level, 9600,8,N,1RS232 Data InterfaceStandard RS232 level, supporting 1200~115200ConstellationQPSK, ...