The HE397B-2 from BOWEI Integrated Circuits is a RF Amplifier with Frequency 20 MHz to 3.6 GHz, Gain 20 to 22 dB, Gain Flatness ±0.5 to 1 dB, Noise Figure 2.5 to 3 dB, Output Power 15 to 16.5 dBm. Tags: Drop-In, Power Amplifier. More details for HE397B-2 can be seen below.