The 6555 from Ophir RF is a RF Amplifier with Frequency 8 to 12 GHz, Gain 69 dB, Gain Flatness ±3 dB, Output Power 69.19 to 69.78 dBm, Output Power 8300 to 9500 W. Tags: Benchtop / Rackmount, Travelling Wave Tube Amplifier, Power Amplifier, Automatic Gain Controlled Amplifier. More details for 6555 can be seen below.