The KB00210S51A from KeyLink Microwave is a RF Amplifier with Frequency 20 MHz to 1 GHz, Gain 51 dB, Output Power Limit 50.97 dBm, Output Power Limit 125.03 W, AC Voltage 100 to 260 VAC, 50/60Hz V. Tags: Power Amplifier. More details for KB00210S51A can be seen below.