The APT2-01520166-03510-D4 from AmpliTech, Inc. is a RF Amplifier with Frequency 1.52 to 1.66 GHz, Gain 30 dB, Gain Flatness ±0.5 dB, Noise Figure 0.35 dB. Tags: Drop-In, Low Noise Amplifier. More details for APT2-01520166-03510-D4 can be seen below.