The Model 277 from Applied Systems Engineering is a RF Amplifier with Frequency 18 to 36 GHz, Noise Figure 35 dB, Output Power 51.76 dBm, Output Power 150 W, Spurious -50 dBc. Tags: Benchtop / Rackmount, Travelling Wave Tube Amplifier, Power Amplifier. More details for Model 277 can be seen below.