The HEM388E from Sainty-Tech Communications Limited is a RF Amplifier with Frequency 20 to 1000 MHz, Gain 17 to 20 dB, Gain Flatness ±0.5 dB, Noise Figure 1 dB, Output Power 15 to 17 dBm. Tags: Power Amplifier. More details for HEM388E can be seen below.