The HEM361B from Sainty-Tech Communications Limited is a RF Amplifier with Frequency 10 to 500 MHz, Gain 28 to 29 dB, Gain Flatness ±0.5 dB, Noise Figure 1.8 dB, Output Power 6 to 7 dBm. Tags: Power Amplifier. More details for HEM361B can be seen below.