Agilent N9923A Handheld RF Vector Network Analyzer with Option 106 (6 GHz RF vector network analyzer, transmission/reflection). Agilent’s FieldFox RF vector network analyzer is the world’s most accurate handheld VNA. A standard FieldFox RF VNA provides T/R measurements, or S11 and S21, with magnitude and phase. Adding Option 122 (full 2-port S-parameters) allows two-port cal and measurement of all 4 S-parameters at the same time. The VVM option also provides ratio measurements of two channels, A/B or B/A. Other applications include distance-to-fault and VSWR testing, absolute power measurements, and characterization of 75-ohm cable TV devices. Standard accessories include AC/DC adapter, battery, and soft carrying case.