Both types differ in their construction, uses, and range of capabilities. You may also find these cables designated as RG-6/U or RG-59/U, but there is no difference. RG-6 and RG-59 are two of the most common varieties of coaxial cables, i.e., cables that conduct electricity to transmit signals of radio frequencies, computer networks, and cable televisions. The numbers are used to distinguish one cable from the other, but they are assigned randomly and carry no specific meaning. RG stands for an obsolete military term ‘Radio Guide’. Coaxial cables use the RG system to differentiate between the various kinds of cables. Some coaxial cables may have a layer of foil between the dielectric and the conducting core. This is further covered with a tube-like braid of copper wires, which is wrapped around by a solid polyvinyl chloride insulating cover called a jacket. The first closed-circuit transmission of video signals through television by coaxial cables was used in the 1936 Summer Olympics, to send signals from Berlin to Leipzig.Īll coaxial cables are constructed with a steel, copper, or aluminum conductor core, which is surrounded by a layer of white/black dielectric insulation.
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