The APTW22-17702300-1710-WR42-D22 from AmpliTech, Inc. is a RF Amplifier with Frequency 17.7 to 23 GHz, Gain 50 dB, Gain Flatness ±1.5 dB, Noise Figure 1.70 dB. Tags: Low Noise Amplifier. More details for APTW22-17702300-1710-WR42-D22 can be seen below.