The Belden 9913-500 RG8/U coaxial cable (black) is low loss with an "air" dielectric. This 50 Ohm coaxial cable has a solid center conductor and a semi-solid polyethylene dielectric. A 100 percent shield coverage prevents loss.brbrThe braided coaxial cable offers similar performance compared to corrugated copper cables but provides higher flexibility and simplified connection. This air dielectric RG8 cable requires 9913 specific connectors.brbrThe Belden RG8/U low loss coaxial cable with "air" dielectric is available as a bulk 500 ft spool.