The HES373B from Sainty-Tech Communications Limited is a RF Amplifier with Frequency 10 to 1000 MHz, Gain 14 to 16 dB, Gain Flatness ±1.0 dB, Noise Figure 2.8 dB, Output Power 8 to 8.5 dBm. Tags: Power Amplifier. More details for HES373B can be seen below.