The 9820/94900-J18K40 from Quarterwave Corporation is a RF Amplifier with Frequency 18 to 40 GHz, Gain 39 dB, Noise Figure 22 dB, Spurious -60 to -55 dBc, AC Voltage 120 or 240 V. Tags: Benchtop / Rackmount, Travelling Wave Tube Amplifier. More details for 9820/94900-J18K40 can be seen below.