TIMES~1/2" Air Helx/Plen Red Air-Dielectric Corrugated Plenum Cable. Low-loss, plenum listed (type CMP) coaxial cable. This design offers excellent intermodulation performance, and can be used as feedlines within buildings to support distributed antenna systems (DAS). The solid outer conductor of the corrugated coaxial cable creates a continuous RFI/EMI shield that minimizes system interference and eliminateS PIM when used with Times Connectors.