I want use RG11 from my modem to the wall, will this be better than RG6? Cable Modems and Wiring Issues| Unless your wall and modem are a really really really long distance from each other (250' or more), it would be an unnecessary waste of wire, room, and money (if it costs). RG11 wire is not very flexible, and a bit thicker than RG6, so it's harder to run as well. by Raydr | ||