The AFS4-12001800-28-ULN from Narda-MITEQ is a RF Amplifier with Frequency 12 to 18 GHz, Gain 20 dB, Gain Flatness ± 1.5 dB, Noise Figure 2.8 dB, P1dB 10 dBm. Tags: Power Amplifier, Low Noise Amplifier. More details for AFS4-12001800-28-ULN can be seen below.