The KB00810S57A from KeyLink Microwave is a RF Amplifier with Frequency 80 MHz to 1 GHz, Gain 58 dB, Output Power Limit 56.99 dBm, Output Power Limit 500.03 W, AC Voltage 100 to 260 VAC, 50/60Hz V. Tags: Power Amplifier. More details for KB00810S57A can be seen below.