The AMFW-5S-03700420-35 from Narda-MITEQ is a RF Amplifier with Frequency 3.7 to 4.2 GHz, Gain 40 dB, Gain Flatness +/- 0.5 dB, Noise Figure 0.495 dB, Output Power 10 dBm. Tags: Low Noise Amplifier. More details for AMFW-5S-03700420-35 can be seen below.