The HEM395B from Sainty-Tech Communications Limited is a RF Amplifier with Frequency 10 to 1500 MHz, Gain 10 to 11.5 dB, Gain Flatness ±0.5 dB, Noise Figure 4.8 dB, Output Power 13 to 14 dBm. Tags: Power Amplifier. More details for HEM395B can be seen below.