what is coaxial cable

Coaxial cable, also known as coax, is an electrical cable that transmits radio frequency (RF) signals from one point to another. It consists of an inner conductor, usually a solid copper, stranded copper, or copper-plated steel wire, surrounded by an insulating layer, which is then surrounded by a braided metal conductor that helps to prevent the interference of electrical signals and prevent cross-talk. The entire setup is again covered with a protective plastic layer to provide extra safety to the cable. Coaxial cables are primarily used for sending audio and video signals. They are integrated into complex video relay and distribution systems, and the most common cables used in video applications are RG59/U and RG6/U. Coaxial cables are also used as a transmission line for radio frequency signals, and their applications include feedlines connecting radio transmitters and receivers to their antennas, computer network (e.g., Ethernet) connections, digital audio (S/PDIF), and distribution of cable television signals.