Features 1 Frequency Range 470^ 860MHz 2 RF Power Output 400W, Three units will be used for 1kW DTV transmitter and eight units for 3kW. 3 RF Power Input -5^ + 5dBm adjustable. It can be directly connected to exciter with output power of 0dBm.There is no need of intermediate power amplifier. 4 Gain Deviation d ± 0.3dB 5 Phase Deviation d ± 3º 6 Efficiency from AC Input to RF Output 22% 7 Liquid Cooling 1.5U 19â standard rack hot-swap( option) 8 Forced Air Cooling 3U 19â standard rack hot-swap( option) air from left to right or from bottom to top( option) 9 Protection Overvoltage, Undervoltage, Overcurrent, Overtemperature and Overload 10 Monitoring and Control Interface RS232 RS485 I2C CAN Selectable 11 Maintain Interface RS232 USB Selectable