The APTX-02000400-0910-BTO from AmpliTech, Inc. is a RF Amplifier with Frequency 2 to 4 GHz, Gain 31 to 33 dB, Gain Flatness ±1 dB, Noise Figure 0.8 to 0.9 dB, P1dB 14 to 15 dBm. Tags: Low Noise Amplifier. More details for APTX-02000400-0910-BTO can be seen below.