The K4S from Communications & Power Industries is a SATCOM Amplifier System with Frequency 1.6 to 2.7 GHz, Klystron Power 3.0 kW (64.8 dBm), Small Signal Gain 60 to 70 dB, Power 64.8 dBm, Power 3019.95 W. Tags: Rack Mount, Klystron. More details for K4S can be seen below.