Agilent Technologies’ N9923A FieldFox RF Vector Network Analyzer (VNA) is presented as the world's most accurate handheld VNA. The FieldFox RF VNA provides 0.01 dB/degree Celsius measurement stability to minimize drift errors, and it offers integrated QuickCal calibration capability. QuickCal enables consistent measurement results and confidence in the data while eliminating the need to carry a calibration kit into the field. As a full two-port network analyzer, the FieldFox RF VNA allows operators to simultaneously measure and display all four S-parameters. Users can calibrate the FieldFox RF VNA without an external cal kit and without mechanical standards. With QuickCal, operators can perform a calibration in seconds, providing a quick and easy way to eliminate measurement errors. The FieldFox RF VNA offers a field-proof design with no fans or vents and is said to be the only handheld network analyzer that meets and exceeds MIL PRF 28800F Class 2 compliance.