ABSTRACT: This is the user guide of the Maury Microwave 2.92mm Coaxial Calibration Kit for models 8770CK10/11 and 8770CK20/21. This series of 2.92mm the DC to 40.0 GHz coaxial calibration kits is designed to provide accurate calibrations of network analyzers in range. Each of these kits includes all the necessary calibration standards and associated hardware needed for the accurate calibration of most network analyzers.