The APT2-00500200-2013-D20 from AmpliTech, Inc. is a RF Amplifier with Frequency 500 MHz to 2 GHz, Gain 17 dB, Gain Flatness ±1.25 dB, Noise Figure 2.00 dB. Tags: Drop-In, Low Noise Amplifier. More details for APT2-00500200-2013-D20 can be seen below.