The APT4-25002750-150K10-D22 from AmpliTech, Inc. is a RF Amplifier with Frequency 25 to 27.5 GHz, Gain 40 dB, Gain Flatness ±1.5 dB, Noise Figure 1.81 dB. Tags: Drop-In, Low Noise Amplifier. More details for APT4-25002750-150K10-D22 can be seen below.