The APT22-18002650-1910-D22-S from AmpliTech, Inc. is a RF Amplifier with Frequency 18 to 26.5 GHz, Gain 45 dB, Gain Flatness ±2 dB, Noise Figure 1.90 dB. Tags: Drop-In, Low Noise Amplifier. More details for APT22-18002650-1910-D22-S can be seen below.