The ZHL-0G64G21W1+ from Mini Circuits is a RF Amplifier with Frequency 600 to 4200 MHz, Gain 40 to 47 dB, Small Signal Gain 40 to 47 dB, Gain Flatness ±1.2 to ±1.6 dB, Noise Figure 5.7 dB. Tags: Power Amplifier. More details for ZHL-0G64G21W1+ can be seen below.