RG 59 coaxial cable differs from other shielded cable used for carrying lower frequency signals, in that the dimensions of the cable are controlled to give a precise, constant conductor spacing, which is needed for it to function efficiently as a transmission line. RG 59 coaxial cable is utilized on televisions and security cameras.
Coaxial cable conducts electrical signal using an inner conductor (usually a solid copper, stranded copper or copper plated steel wire) surrounded by an insulating layer and enclosed by a shield, typically one to four layers of woven metallic braid and metallic tape. RG 59 coaxial cable design choices affect physical size, frequency performance, attenuation, power handling capabilities, flexibility, strength and cost.
Coaxial cables use RG ratings to distinguish between the different kinds of cables. RG is an old, long forgotten military term that stands for radio guide. The number distinguishes the different cable specifications. Literally dozens of coaxial cables have been made over the years, but the only one that most people need to worry about is RG 59 cable. RG 59 has been around for a long time .
This cable used to be what most people used for their cable TV connection. Modern signal requirements have made this cable less popular in the last few years. RG 59 is good for lower frequency signals (anything under about 50 MHZ). That makes a good choice for closed circuit television (CCTV) video surveillance system.
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