ABSTRACT: This is the user guide of the Maury Microwave WR284 Waveguide SSLT Calibration Kit for models WR284CK10\2. The WR284CK10\12 series of waveguide SSLT calibration kits are designed to provide accurate calibrations of network analyzers in the WR284 band of 2.60 – 3.95 GHz. Each of these kits includes all the necessary SSLT calibration standards and associated hardware needed for the accurate calibration of most network analyzers.