Coaxial Cables, as the name implies, are electrical cables where the inner conductor & the outer conductor, share a common spatial axis and having dielectric insulation. The inner conductor, generally made of copper, is used to carry electrical signals and the outer conductor, which is a wire mesh shield, is used for grounding. Due to nature of its construction, coaxial cables are suitable to carry high frequency signals like Cable television signals, Broadband internet data, and keep the signals free from other external interferences.
In commercial applications, one primarily encounters 3 types of Coaxial Cables - RG59, RG6 & RG11 - which are in increasing order of cable price, thickness/weight and signal carrying capacity. But all of them have a common impedance of 75 ohms.
RG59 Coaxial Cable (nominal diameter - 5mm), is suitable for CCTV (Camera) systems. It can carry signals with minimal losses upto a distance of 250 metres.
RG6 Coaxial Cable (nominal diameter - 7mm), finds its applications in Cable TV, Dish TV, TV Antenna, Broadband internet and can carry signals upto 450 metres.
RG11 Coaxial Cable (nominal diameter - 10mm), has similar applications as above but used either in harsher environmental conditions and/or where signals need to be carried longer distances upto 600 metres.
Are you going to buy Coaxial Cables? If yes then you should browse Cables & Wires > Co-axial Cables where you will find all types of Coaxial Cables.
