Government and military applications summoned in the initial development of coaxial cables. Built to military specifications and classified according to Radio Guide Utility numbers, these products were developed to help support high frequency radio transmissions. The steady growth of the computer industry further developed the need for coaxial cables for commercial use. Depending upon the application, many different types of conductor constructions may be found in coaxial cables. Solid Conductors Solid copper conductors are popular on many CCTV installations.
Solid conductors provide less chance for distortion and line loss than copper covered steel.
However, copper is a soft material and will break if repeatedly flexed. It is best used on permanent installation. Many small strands of copper can be used to make up any gauge size. Stranded conductors provide increased flexibility over solid conductors. This design has become popular for use on pan and tilt cameras, robotics and other applications that require repeated flexing.