Commercial Grade Coaxial Cable used by Communications Companies and even your local Cable TV company to wire services to your House or Office. Common uses include Telecommunications, HDTV, Hi Speed Internet, Satellite Television, and CCTV. Based on a Tri-Shield standard cable (with an attached messenger wire) construction of fully bonded foil alternated with a layer of shielding braid, Tri-Shield adds an additional surrounding layer of foil to improve transmission reliability by means of an additional interference barrier. Tri-Shield RG11 will have 77% Braided Aluminum Shield Coverage Between 2 Layers of Aluminum Foil Shield, the 1st Foil Layer being Bonded to the Foam Dialectric. This high quality communications cable is manufactured in the United States by Commscope, a multi-national telecommunications and network infrastructure provider based in North Carolina.