Coax cable, also known as antenna coaxial cable, is a type of electrical cable that is commonly used for transmitting audio and video signals. It consists of a central conductor, which carries the signal, surrounded by an insulating layer, a metal shield, and an outer insulating layer. The central conductor is typically made of copper or aluminium, while the shielding is usually made of braided copper or aluminium foil. Coax cable is widely used in applications such as television broadcasting, cable television, and computer networking. It is known for its high bandwidth capabilities, low signal loss, and resistance to electromagnetic interference. Overall, coax cable is an essential component in many communication systems, providing reliable and efficient signal transmission.