The Maury 2660Q10 economy TRL kit is capable of performing a full 2-port calibration over the frequency band 0,8 - 18 GHz and contain the air lines needed to perform TRL calibration of vector network analyzers and devices equipped with 7mm connectors. Kit components are provided in foam-lined wood instrument cases. The TRL airline lengths meet NIST and Agilent's recommendation of 30 degrees phase margin.