The HE311 from BOWEI Integrated Circuits is a RF Amplifier with Frequency 1 to 110 MHz, Gain 17 to 18 dB, Gain Flatness ±0.6 to 1 dB, Noise Figure 4 to 4.5 dB, Output Power 17 to 18 dBm. Tags: Drop-In, Power Amplifier. More details for HE311 can be seen below.