The KWR42A precise K-band waveguide mechanical calibration kit contains K-band load, K-band short, 1/8λ waveguide line, 1/4λ waveguide line and 3/8λ waveguide line, specified from 17.6 GHz to 26.7 GHz.

For measurement convenience, the KWR42A includes 2.92mm coax-to-waveguide converters and some fasteners like screws, nuts, nut collars, position bolts, etc.

The KWR42A performance specifications are very similar to the Keysight K11644A mechanical calibration kit and it can be used as an approximate replacement of K11644A, or use the STD of K11644A in network analyzers.