The ZHL-100W-251XS+ from Mini Circuits is a RF Amplifier with Frequency 50 to 250 MHz, Gain 42 to 51 dB, Gain Flatness ±0.7 to ±1.5 dB, Noise Figure 4.5 dB, Output Power 48 dBm. Tags: Power Amplifier. More details for ZHL-100W-251XS+ can be seen below.