The VZU-6997AX from Communications & Power Industries is a RF Amplifier with Frequency 17.3 to 18.4 GHz, Gain 70 to 75 dB, Small Signal Gain 1 to 4 dB pk-pk, Output Power Limit 57.95 to 58.75 dBm, AC Voltage Single phase, 208 to 240 VAC ±10% Frequency: 47 to 63 Hz. Tags: Benchtop / Rackmount, Travelling Wave Tube Amplifier. More details for VZU-6997AX can be seen below.