The BZ-00500400-121330-102020 from B&Z Technology is a RF Amplifier with Frequency 500 MHz to 4 GHz, Gain 30 to 33 dB, Gain Flatness ±1 dB, Noise Figure 1.1 to 1.2 dB, Output Power 13 to 14 dBm. Tags: Low Noise Amplifier. More details for BZ-00500400-121330-102020 can be seen below.