The ZHL-10M4G21W0X+ from Mini Circuits is a RF Amplifier with Frequency 10 to 4200 MHz, Gain 31 to 40 dB, Small Signal Gain 31 to 40 dB, Gain Flatness ±1.2 to ±1.6 dB, Noise Figure 6.5 dB. Tags: Power Amplifier. More details for ZHL-10M4G21W0X+ can be seen below.