ABSTRACT: This is the user guide of the Maury Microwave WR22 Waveguide SSLT Calibration Kit for models WR22CK10\12 Series. The WR22CK10\12 series of waveguide SSLT calibration kits are designed to provide accurate calibrations of network analyzers in the WR22 band of 33.0 – 50.0 GHz. Each of these kits includes all the necessary SSLT calibration standards and associated hardware needed for the accurate calibration of most network analyzers.