What would be the differences to use RG59, RG11 and RG6 cables in CCTV installations?
The ‘RG’ acronyms have historically referred to ‘Radio Grade’ coaxial cabling and today are referred to as RG59, RG11, RG6. Each of these coaxial cables has a characteristic impedance of 75 ohms. RG59 coaxial cable has a smaller diameter center conductor than RG6 resulting in higher attenuation (signal loss). RG 59 cables are typically specified for use as equipment patch cords because of their smaller bend radius and enhanced flexibility. Since RG 6 cables exhibit less attenuation than RG59, they are more commonly used for distributed cabling and are recommended for use up to 90m (295 ft.). RG11 cables supports even less attenuation than RG6 or RG59 because the center conductor diameter is almost twice that of RG59. RG11 cables are recommended for lengths up to 112m (400ft).
