RG8 Coaxial Cable

RG-8/U is a 50-ohm, double-shielded coaxial cable with an outer diameter of 0.405 inches and a maximum working voltage of 4000 Vrms. It has a 7-wire copper inner conductor (which carries the electrical signal), which is surrounded by an insulating layer typically made of solid low-density polyethylene (PE).

The cable comprises an insulation layer surrounded by the shielding layer made of copper braid – a combination of bonded aluminum foil and copper braid. The shields form an outer conductor and also provide a shield against electromagnetic interference. Finally, the structure is covered with an outermost layer called a jacket made of Polyvinyl Chloride (PVC). The sheath protects the cable core from mechanical, moisture and chemical problems.