The VTM-6196R1 from Communications & Power Industries is a Traveling Wave Tube with Frequency 6 to 18 GHz, Power 20 W, Gain 40 dB, Collector Voltage 1600 to 2200 V (DC), Cathode Current 150 mA(DC). Tags: Helix. More details for VTM-6196R1 can be seen below.