The APT2-20202120-1108-D2-PM from AmpliTech, Inc. is a RF Amplifier with Frequency 20.2 to 21.2 GHz, Gain 18 dB, Gain Flatness ±0.3 dB, Noise Figure 1.10 dB. Tags: Drop-In, Low Noise Amplifier. More details for APT2-20202120-1108-D2-PM can be seen below.