The VTC-5764C from Communications & Power Industries is a Traveling Wave Tube with Frequency 5.25 to 5.75 GHz, Peak Output Power 200 kW, Gain 47 dB, Collector Voltage 37 to 40 kV, Cathode Voltage -50 to -47 kV. Tags: Coupled Cavity. More details for VTC-5764C can be seen below.