The BZ-19002100-201225-052020 from B&Z Technology is a RF Amplifier with Frequency 19 to 21 GHz, Gain 25 to 27 dB, Gain Flatness ±0.5 dB, Noise Figure 1.8 to 2 dB, Output Power 12 to 14 dBm. Tags: Power Amplifier. More details for BZ-19002100-201225-052020 can be seen below.