The AA-1218G-3.5KW-PT from Advanced Amplifiers is a RF Amplifier with Frequency 12 to 18 GHz, Gain 64 dB, Output Power 3500 W, Peak Power 64 dBm, Spurious -60 to -55 dBc. Tags: Benchtop / Rackmount, Travelling Wave Tube Amplifier. More details for AA-1218G-3.5KW-PT can be seen below.