The VZA-6903E3 from Communications & Power Industries is a SATCOM Amplifier System with Frequency 27.0 to 31.0 GHz, Klystron Power 600 to 750 W, Small Signal Gain 75 to 80 dB, AC Voltage 180 to 264 VAC, Power Cosumption 2.9 kVA. Tags: Rack Mount, Klystron. More details for VZA-6903E3 can be seen below.