The AMF-4B-03700420-50-39P from Narda-MITEQ is a RF Amplifier with Frequency 3.7 to 4.2 GHz, Gain 35 dB, Gain Flatness ± 1 dB, Noise Figure 5 dB, P1dB 39 dBm. Tags: Power Amplifier, Low Noise Amplifier. More details for AMF-4B-03700420-50-39P can be seen below.