ABSTRACT: This is the user guide of the Maury Microwave 7mm Coaxial Calibration Kit for model 2650CK30. This series of 7mm DC to 18.0 GHz coaxial calibration kits is designed to provide accurate calibrations of network analyzers in the range. Each of these kits includes all the necessary calibration standards and associated hardware needed for the accurate calibration of most network analyzers.