The 9400/94300-E20F40 from Quarterwave Corporation is a RF Amplifier with Frequency 2 to 4 GHz, Gain 35 dB, Peak Power 0.02 kW, Spurious 50 to 55 dBc, AC Voltage 120 to 240 V. Tags: Benchtop / Rackmount, Travelling Wave Tube Amplifier. More details for 9400/94300-E20F40 can be seen below.