Coaxial cables, usually shortened to “coax” cables, are a type of heavy-duty electrical cable used in a variety of radiofrequency (RF) signal transmission applications.
It consists of an inner conductor surrounded by a tubular insulating layer, surrounded by a tubular conducting shield. The purpose of coaxial cables is to transmit electrical signals from one device, component, or system to another.
Coaxial cable is a type of transmission line, used to carry high-frequency electrical signals with low losses. It is used in such applications as telephone trunklines, cable television signals, and connecting radio transmitters and receivers to their antennas. It differs from other shielded cables because the dimensions of the cable and connectors are controlled to give a precise, constant conductor spacing, which is needed for it to function efficiently as a transmission line.
The three most commonly used coaxial cable types for video applications are RG59/U, RG6/U and RG11/U is available with either solid copper or copper-clad-steel Centre conductor,
insulated with a layer of foam reinforced with metal wire and the main cover is made of PVC.
This makes them one of the most durable types of cables used in radio frequency transmission operations.