The HE388A from Sainty-Tech Communications Limited is a RF Amplifier with Frequency 20 to 400 MHz, Gain 25 to 26 dB, Gain Flatness ±0.5 dB, Noise Figure 3.5 dB, Output Power 22 to 22.5 dBm. Tags: Power Amplifier. More details for HE388A can be seen below.