The HE312 from Sainty-Tech Communications Limited is a RF Amplifier with Frequency 1 to 100 MHz, Gain 15 to 17 dB, Gain Flatness ±0.5 dB, Noise Figure 3.5 dB, Output Power 19 to 19.5 dBm. Tags: Power Amplifier. More details for HE312 can be seen below.