The HE164B from Sainty-Tech Communications Limited is a RF Amplifier with Frequency 3100 to 3400 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 HE164B can be seen below.