The APT4-04400850-1415-D6-PLH from AmpliTech, Inc. is a RF Amplifier with Frequency 4.4 to 8.5 GHz, Gain 35 dB, Gain Flatness ±1 dB, Noise Figure 1.40 dB. Tags: Drop-In, Low Noise Amplifier. More details for APT4-04400850-1415-D6-PLH can be seen below.