ABSTRACT: This is the user guide of the Maury Microwave BNC (50 Ohm) Coaxial Calibration Kit for model 8550CK10. This series of BNC 50 ohm coaxial calibration kits is designed to provide accurate calibrations of network analyzers in the DC to 2.0 GHz range. However, these kits can be used at higher frequencies up to 10 GHz. Each of these kits includes all the necessary calibration standards and associated hardware needed for the accurate calibration of most network analyzers.