The AFS4-04000800-25-23P-4 from Narda-MITEQ is a RF Amplifier with Frequency 4 to 8 GHz, Gain 28 dB, Gain Flatness ± 1.5 dB, Noise Figure 2.5 dB, Output Power 23 dBm. Tags: Power Amplifier, Low Noise Amplifier. More details for AFS4-04000800-25-23P-4 can be seen below.