The VZK-6901J1 from Communications & Power Industries is a RF Amplifier with Frequency 18 to 26.5 GHz, Gain 20 to 46 dB, Phase Noise -120 c/Hz, AC Voltage 100 to 264 VAC, 47 to 63 Hz, single phase, Operating Temperature -10 to 50 Degree C. Tags: Benchtop / Rackmount, Travelling Wave Tube Amplifier. More details for VZK-6901J1 can be seen below.