Semi-rigid coaxial cable finds application in frequency ranges from 500 megahertz (500 MHz) through 65 Gigahertz (65 GHz) and beyond. Almost any system designed for 500 megahertz and above,and in need of good operational performance and total shielding, can utilize semi-rigid cable.It is still the best microwave transmission medium available in the world. The solid tubular outer conductor yields 100% RF shielding and enables the dielectric and center conductor to remain precisely spaced. This results in optimum impedance control as well as the lowest possible insertion loss.