PMI Model No. APT3-03100350-0807-D5S is an ultra low noise amplifier that operates over the 3.1 to 3.5 GHz frequency range. The maximum noise figure is 0.8 dB and offers a maximum VSWR of 1.35:1 at the input and output. These amplifiers are phase matched to within ±8.0 degrees and are phase tracked to within 4.0 degrees.