The HE393A from Sainty-Tech Communications Limited is a RF Amplifier with Frequency 10 to 500 MHz, Gain 17 to 18 dB, Gain Flatness ±0.5 dB, Noise Figure 2.7 dB, Output Power 11 to 12 dBm. Tags: Power Amplifier. More details for HE393A can be seen below.