The VTF-6130C1B from Communications & Power Industries is a Traveling Wave Tube with Frequency 2 to 6.5 GHz, Power 80 W, Gain 23 dB, Collector Voltage 0.65 Ew V (DC), Cathode Current 325 mA(DC). Tags: Helix. More details for VTF-6130C1B can be seen below.