RFS's HCA78-50JPLW 7/8 in plenum-rated coaxial cable features an air dielectric. The 50 Ohm coaxial cable has a 10 in bending radius per ft. This air dielectric cable has a helically-corrugated copper outer conductor and copper tube inner conductor. Maximum frequency capacity is 3.0 GHz. No automated prep tool is available for this transmission line—air connectors are used.brbrThe RFS 7/8 in plenum-rated coaxial cable with air dielectric is available in bulk and is priced per foot.