What is coaxial cable?
Coaxial cable has both an inner conductor and outer conductor to carry a signal. There is a wide array of coaxial cable types, but the most common types used in commercial applications for video service, video surveillance, or for high speed networks include RG-6 and RG-59.
For video applications, it is essential to choose a coax cable that are of the 75 ohm type. Some 50 ohm Coax cables are suitable for data networks, but are not sufficient for video transmission.