The 6544 from Ophir RF is a RF Amplifier with Frequency 2 to 4 GHz, Gain 66 dB, Output Power 66.53 dBm, Output Power 4500 W, Peak Power 4.5 kW. Tags: Benchtop / Rackmount, Travelling Wave Tube Amplifier, Power Amplifier, Automatic Gain Controlled Amplifier. More details for 6544 can be seen below.