What Makes RG58 Tick? Anatomy of a Coaxial Cable
2. Peeling Back the Layers
RG58, like any coaxial cable, is built like a layered onion — but way more useful (and less likely to make you cry). At its heart is a solid or stranded copper core, the conductor that carries the signal. Surrounding the core is a layer of insulation, typically made of polyethylene. This insulation keeps the signal where it belongs and prevents shorts.
Next up is a metallic shield, usually braided copper or aluminum. This shield acts like a fortress, protecting the signal from external interference and keeping the signal from radiating outwards. Think of it as a privacy screen for your RF waves, preventing nosy neighbors from eavesdropping (not that they could, but you get the idea!).
Finally, the whole shebang is wrapped in an outer jacket, typically made of PVC. This jacket protects the cable from the elements, physical damage, and general wear and tear. It’s the cable’s armor, ensuring it can withstand the rigors of everyday use. Choosing a cable with a good jacket material is essential, especially if it’s exposed to sunlight or extreme temperatures.
So, in summary, from the center outwards, we have the copper core, the insulator, the metallic shield, and the outer jacket. Each layer plays a crucial role in ensuring signal integrity and cable durability. If any of these layers are compromised, the cable’s performance can suffer significantly.