The HEM462B from Sainty-Tech Communications Limited is a RF Amplifier with Frequency 10 to 1500 MHz, Gain 19 to 21 dB, Gain Flatness ±0.75 dB, Noise Figure 4 dB, Output Power 8 to 8.5 dBm. Tags: Power Amplifier. More details for HEM462B can be seen below.