The XTD-2500KL amplifier is a compact antenna mounted high power amplifier designed for applications requiring high transmit power levels. The unit includes integrated cooling and monitoring and control systems. All high-voltage cabling is contained with in the amplifier chassis. The amplifier uses two peak-power TWTs operating in parallel and power combined in a hybrid circuit. The total peak power of the TWTs is 2,500 Watts. This technique enables power levels rivaling klystron-based amplifier solutions. Because these amplifiers are used outdoors, losses from waveguide runs, multiplexers and rotary joints are eliminated delivering more power to the antenna feed. Both C-Band and the Ku-Band amplifiers will deliver 800 watts of linear power. TWTs have very high instantaneous bandwidth compared to Klystron amplifiers allowing the simultaneous transmission of multiple carriers without the need to multiplex signals at the transmit frequency.