RG-59 coaxial cable is a type of cable commonly used for low-frequency signal transmission, particularly in applications such as CCTV systems and cable television. It features a characteristic impedance of 75 ohms, making it suitable for carrying video signals. The cable consists of a central conductor, typically made of copper, surrounded by a dielectric insulator, a metallic shield, and an outer protective jacket.
The RG-59 is known for its flexibility and ease of installation, but it is generally not recommended for high-frequency applications or long-distance runs due to its higher attenuation compared to other coaxial cables like RG-6. In Australia, RG-59 is often used in residential settings where shorter cable runs are required, and signal loss is less of a concern.
RG-59 is rarely found in modern wireless systems, but can still be found on some low frequency antennas where it can act as a matching transformer or be used to deliberately adjust the antennas impedance characteristics.
Specifications vary significantly between manufacturer variations.