The APT3-00100200-1015-D4-GW-4850 from AmpliTech, Inc. is a RF Amplifier with Frequency 100 MHz to 2 GHz, Gain 48 dB, Gain Flatness ±1 dB, Noise Figure 1.00 dB. Tags: Low Noise Amplifier. More details for APT3-00100200-1015-D4-GW-4850 can be seen below.