Why should the outer jacket of coaxial cable be resistant to ultraviolet light?

The outer jacket of coaxial cable is designed to be resistant to ultraviolet (UV) light primarily to protect the integrity of the cable. Exposure to UV light can cause the materials used in the outer jacket to degrade over time, leading to physical damage such as cracks, brittleness, and other forms of deterioration. When the jacket becomes compromised, it can allow moisture and environmental contaminants to enter the cable. This intrusion can not only affect the performance of the cable, potentially leading to increased signal loss and interference, but can also result in corrosion of the inner conductors, further degrading the cable's effectiveness.

Protecting the cable from UV damage is crucial for maintaining its longevity and reliability, especially for installations that are exposed to direct sunlight or harsh outdoor conditions. Therefore, selecting coaxial cables with UV-resistant jackets ensures that they can withstand environmental factors and maintain optimal performance.