The BZ-00504000-111020-102020 from B&Z Technology is a RF Amplifier with Frequency 500 MHz to 4 GHz, Gain 20 to 22 dB, Gain Flatness ±1 dB, Noise Figure 1 to 1.1 dB, Output Power 10 to 12 dBm. Tags: Power Amplifier. More details for BZ-00504000-111020-102020 can be seen below.