The KN1840M53A from KeyLink Microwave is a RF Amplifier with Frequency 1.805 to 1.88 GHz, Gain 53 dB, Output Power Limit 53.01 dBm, Output Power Limit 199.99 W, Supply Voltage 28 V. Tags: Power Amplifier. More details for KN1840M53A can be seen below.