The VTX-5786B from Communications & Power Industries is a Traveling Wave Tube with Frequency 8.6 to 9.5 GHz, Peak Output Power 12 kW, Gain 48 dB, Collector Voltage 14 to 17 kV, Cathode Voltage -25 to -22 kV. Tags: Coupled Cavity. More details for VTX-5786B can be seen below.