Short for
Radio Guide, RG is a designation for different
types of
coaxial cable, which is a type of wire that
consists of a center wire surrounded by insulation and then a grounded shield of
braided wire. The RG specification is a older military-initiated specification.
RG-6 is one of the most commonly used coaxial cables for residential and
commercial applications, and is also the standard CATV used to route home cable
television.