The KB0820S50A from KeyLink Microwave is a RF Amplifier with Frequency 800 MHz to 2 GHz, Gain 50 dB, Output Power Limit 50 dBm, Output Power Limit 100 W, AC Voltage 100 to 260 VAC, 50/60Hz V. Tags: Power Amplifier. More details for KB0820S50A can be seen below.