The S2611 Calibration Kit is a precision mechanical calibration kit designed for vector network analyzers (VNAs). It provides a complete set of calibration standards (Open, Short, Load, Thru) to ensure that your RF measurements are based on a correct reference plane. The kit is built to be robust, durable, and suitable for repeated use in both laboratory and production/test-bench environments. It is ideal when you need reliable and repeatable calibration for coaxial 3.5 mm connector systems up to microwave frequencies. By using S2611 before testing cables, filters, antennas, or other RF components, you can ensure measurement accuracy and consistency.