The VTX-5783B from Communications & Power Industries is a Traveling Wave Tube with Frequency 8.9 to 9.4 GHz, Peak Output Power 50 kW, Gain 48 dB, Collector Voltage 20 to 23 kV, Cathode Voltage -34 to -32 kV. Tags: Coupled Cavity. More details for VTX-5783B can be seen below.