coaxial cables: CATV Broadband Coaxial Cables-1 75-Ohm, Gas-Injected PE Broadband Coaxial Cables (RG59, RG6, RGQUAD, RG11). Coaxial cables, or coax, is an with an inner conductor surrounded by a tubular insulating layer typically of a flexible material with a high, all of which are surrounded by a conductive layer (typically of fine woven wire for flexibility, or of a thin metallic foil), and ...