The AFS4-00101800-40-ULN from Narda-MITEQ is a RF Amplifier with Frequency 100 MHz to 18 GHz, Gain 22 dB, Gain Flatness ± 2.5 dB, Noise Figure 4 dB, P1dB 10 dBm. Tags: Power Amplifier, Low Noise Amplifier. More details for AFS4-00101800-40-ULN can be seen below.