The XTRT-550KaL from Comtech Xicom Technology is a RF Amplifier with Frequency 27.5 to 30 GHz, Output Power 53.8 to 57.4 dBm, Output Power 240 to 550 W. Tags: Benchtop / Rackmount, Travelling Wave Tube Amplifier. More details for XTRT-550KaL can be seen below.