The AFS4-00100400-13-S-4 from Narda-MITEQ is a RF Amplifier with Frequency 100 MHz to 4 GHz, Gain 36 dB, Gain Flatness ± 1 dB, Noise Figure 1.3 dB, P1dB 10 dBm. Tags: Power Amplifier, Low Noise Amplifier. More details for AFS4-00100400-13-S-4 can be seen below.