The VTC-5765B from Communications & Power Industries is a Traveling Wave Tube with Frequency 5.4 to 5.9 GHz, Peak Output Power 75 kW, Gain 47 dB, Collector Voltage 25 to 28 kV, Cathode Voltage -39 to -37 kV. Tags: Coupled Cavity. More details for VTC-5765B can be seen below.