The APTC3-04000800-0700-D4-KH from AmpliTech, Inc. is a RF Amplifier with Frequency 4 to 8 GHz, Gain 23 dB, Gain Flatness ±1 dB, Noise Figure 0.70 dB. Tags: Low Noise Amplifier, Cryogenic Amplifier. More details for APTC3-04000800-0700-D4-KH can be seen below.