The HES380B from Sainty-Tech Communications Limited is a RF Amplifier with Frequency 10 to 400 MHz, Gain 13 to 14 dB, Gain Flatness ±0.5 dB, Noise Figure 3.8 dB, Output Power 19 to 20 dBm. Tags: Power Amplifier. More details for HES380B can be seen below.