What the label leaves out
Lightning energy can enter through coax, control lines, mains, network, telephone, or nearby induction. No single arrestor, ground rod, or switch makes an occupied station safe during a storm.
The mistake to avoid
Focusing only on the antenna coax leaves other entries unprotected, and long inside grounding wires can flash over before reaching a rod.
A sound installation approach
Map all services, use qualified lightning and electrical design, bond at the entry, route conductors outside where possible, maintain separation, disconnect early, and stay away during thunderstorms.
Use current manufacturer documentation, measured RF behavior, the building grounding system, and applicable electrical and lightning requirements. A ratio, DC continuity check, or inline protective device does not establish complete-system safety or efficiency.
