The HE163B from Sainty-Tech Communications Limited is a RF Amplifier with Frequency 2700 to 3100 MHz, Gain 29 to 29.5 dB, Gain Flatness ±0.5 dB, Output Power 33 to 33.5 dBm, Output Power 2 to 2.24 W. Tags: Power Amplifier. More details for HE163B can be seen below.