The 6556 from Ophir RF is a RF Amplifier with Frequency 8 to 12 GHz, Gain 71 dB, Output Power 70 dBm, Output Power 10000 W, Harmonics -3 dBc. Tags: Benchtop / Rackmount, Travelling Wave Tube Amplifier, Power Amplifier, Automatic Gain Controlled Amplifier. More details for 6556 can be seen below.