The HE397A from Sainty-Tech Communications Limited is a RF Amplifier with Frequency 10 to 2000 MHz, Gain 15 to 16 dB, Gain Flatness ±0.5 dB, Noise Figure 1.7 dB, Output Power 15 to 16 dBm. Tags: Power Amplifier. More details for HE397A can be seen below.