The BZ-02800390-121025-102020 from B&Z Technology is a RF Amplifier with Frequency 2.8 to 3.9 GHz, Gain 25 to 28 dB, Gain Flatness ±1 dB, Noise Figure 1 to 1.2 dB, Output Power 10 to 12 dBm. Tags: Power Amplifier. More details for BZ-02800390-121025-102020 can be seen below.