Coaxial cable is commonly used by cable TV companies to transmit television signals to homes and businesses. Coaxial cable, often referred to as coax cable, consists of a center conductor surrounded by a dielectric insulator, which is in turn surrounded by a conductive shield and an outer insulating layer. This construction allows for the efficient transmission of high-frequency electrical signals with minimal interference.

For cable TV transmission, the coaxial cable carries the television signals, which include various channels and data, from the cable company’s distribution center to a subscriber’s home or business. The cable TV signals are sent through the coaxial cables and then decoded by a cable box or television to display the content.

Coaxial cables are preferred for cable TV transmission due to their ability to carry high-bandwidth signals over long distances without significant signal degradation or loss. Their construction helps in shielding the signals from outside interference, ensuring a clearer and more reliable transmission of television programming.

However, with the advancements in technology and the rise of internet-based streaming services, some cable TV companies are transitioning towards fiber optic cables or hybrid fiber-coaxial (HFC) networks to deliver both TV and high-speed internet services due to their higher bandwidth capabilities and faster data transmission rates.