Coax Cables for CCTV Camera

  RG means military specs Radio Guide and the numbers of RG are kind of arbitrary. Nowadays, the most popular RG designations are RG-6, RG-8, RG-11, RG-58 and RG-59. RG-58 and RG-8 are 50 ohm coaxes which is unsuited for video work. RG-6, RG-59 and RG-11 are 75 ohm cable types, RG-59 is the smallest (20 AWG centre conductor), RG-11 is the largest (14 AWG), between RG-59 and RG-11 is RG-6 which is 18 AWG.