The 9820/95100-K27K30 from Quarterwave Corporation is a RF Amplifier with Frequency 27.5 to 29.5 GHz, Gain 51 dB, Input Power -1 dBm, Spurious 55 to 60 dBc, AC Voltage 120 to 240 V. Tags: Benchtop / Rackmount, Travelling Wave Tube Amplifier. More details for 9820/95100-K27K30 can be seen below.