RG59, or Radio Guide was originally a unit indicator for bulk radio cable in the U.S. military’s Joint Electronics Type Designation System. RG59 coaxial cable tends to have an impedance of 75 ohms, and is commonly used for radio frequency and low power video connections. RG59 coaxial cable is typically used for wiring closed circuit surveillance systems. It is ideal since it exhibits high frequency losses, making it practical for short distance cable runs.
RG59 coaxial cable is also available in Siamese versions, where a single run of cable can provide both data and power to a security camera. Primus Cable supplies 500 and 1,000 foot spools of RG59 coaxial cable that are available in both black or white colors.