Coaxial cables, often referred to as coax cables, are a common type of electrical cable that are widely used for transmitting various signals, such as television, internet, and radio. Coaxial cables have a unique construction that makes them well-suited for carrying high- frequency signals with minimal interference. What is a Coaxial Cable? A coaxial cable is a type of electrical cable consisting of a central conductor, an insulating layer, a metallic shield, and an outer insulating layer called a jacket. This construction provides protection against electromagnetic interference and allows for the efficient transmission of high-frequency signals. The name ‘coaxial’ refers to the inner conductor and outer shield sharing one geometric axis. Components of a Coaxial Cable Coaxial cables typically contain the following parts. Inside is a central conductor which carries the electrical signal. Central conductors in coaxial cables are usually made of copper, aluminium or copper covered steel. Around that is an insulating layer (called a dielectric). The coaxial cable dielectric separates the central conductor from the outer layers, preventing electrical contact. Coaxial cables also contain a metallic shield that protects the signal from external interference and electromagnetic radiation. Lastly, an outer insulating sheath or jacket provides additional insulation and protection. A Complete Guide to Coaxial Cables John Pindar, Marketing Manager, Webro
Some coaxial cables may contain more than one metallic shield or braid, depending upon the application they are designed for. Common Coaxial Cable Applications Coaxial cables are the backbone of cable television systems, delivering a variety of signals to homes and businesses. Satellite TV providers use high-quality coaxial cables to transmit digital signals from satellites to subscribers’ satellite dishes. Coaxial cables are used to connect antennas to radios and other communication equipment for transmitting and receiving radio signals. Many internet service providers (ISPs) have also used coaxial cables to deliver high-speed internet access to homes. This is known as “cable internet.” Coaxial cables also have security applications too, usually for video transmission in CCTV surveillance systems. Common Types of Coaxial Cables WF100, WCF100, HD100, CT100, RG6 Suitable for high-frequency signals, and commonly used in residential installations, particularly for cable television (CATV), satellite TV, and broadband internet. WF100 and other 100 type coaxial cables provide good signal quality over long distances.
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