The KB0105S54A from KeyLink Microwave is a RF Amplifier with Frequency 100 to 500 MHz, Gain 54 dB, Output Power Limit 53.98 dBm, Output Power Limit 250.03 W, AC Voltage 100 to 260 VAC, 50/60Hz V. Tags: Power Amplifier. More details for KB0105S54A can be seen below.