The 9800/95700-E20F40 from Quarterwave Corporation is a RF Amplifier with Frequency 2 to 4 GHz, Gain 23 dB, Noise Figure 35 dB, Spurious 55 to 60 dBc, AC Voltage 240 V. Tags: Benchtop / Rackmount, Travelling Wave Tube Amplifier. More details for 9800/95700-E20F40 can be seen below.