The APT5-01690171-05610-D6-T from AmpliTech, Inc. is a RF Amplifier with Frequency 1.69 to 1.71 GHz, Gain 50 dB, Gain Flatness ±1 dB, Noise Figure 0.56 dB. Tags: Drop-In, Low Noise Amplifier. More details for APT5-01690171-05610-D6-T can be seen below.