The AFS3-04000800-09-CR-4 from Narda-MITEQ is a RF Amplifier with Frequency 4 to 8 GHz, Gain 31 dB, Gain Flatness ± 1 dB, Noise Figure 0.9 dB, Output Power 5 dBm. Tags: Low Noise Amplifier, Power Amplifier, Cryogenic Amplifier. More details for AFS3-04000800-09-CR-4 can be seen below.