The VTM-6196R5 from Communications & Power Industries is a Traveling Wave Tube with Frequency 4 to 18 GHz, Power 25 W, Gain 30 dB, Collector Voltage 50% of Ew kV (DC), Cathode Current 150 mA(DC). Tags: Helix. More details for VTM-6196R5 can be seen below.