The 9820/95300-E20F40 from Quarterwave Corporation is a RF Amplifier with Frequency 2 to 4 GHz, Gain 45 dB, Noise Figure 22 dB, Spurious -60 to -55 dBc, AC Voltage 240 V. Tags: Benchtop / Rackmount, Travelling Wave Tube Amplifier. More details for 9820/95300-E20F40 can be seen below.