The Times Microwave 655661 RG142 Teflon plenum-rated coaxial cable (brown) is NEC CMP rated. This 50 Ohm coaxial cable utilizes dual silver shields for 95 percent coverage. The 3/16 in transmission line passes the VW1 vertical wire test and is mil-spec M17/60-RG142 rated. This coaxial cable has a solid center conductor and a brown-tinted FEP jacket.