The HES383C from Sainty-Tech Communications Limited is a RF Amplifier with Frequency 20 to 500 MHz, Gain 10 to 11 dB, Gain Flatness ±0.5 dB, Noise Figure 4.5 dB, Output Power 19 to 20 dBm. Tags: Power Amplifier. More details for HES383C can be seen below.