The KB00305S57A from KeyLink Microwave is a RF Amplifier with Frequency 30 to 500 MHz, Power Gain 57 dB, Gain Flatness 2 dB (Power Gain Flatness), Output Power 56.99 dBm, Output Power 500.03 W. Tags: Benchtop / Rackmount, Power Amplifier. More details for KB00305S57A can be seen below.