The ZHL-4W-422X+ from Mini Circuits is a RF Amplifier with Frequency 500 MHz to 4.2 GHz, Gain 20 to 25 dB, Gain Flatness ±1 to ±1.5 dB, Noise Figure 10 to 15 dB, Output Power 34 dBm. Tags: Power Amplifier. More details for ZHL-4W-422X+ can be seen below.