equal dimension at the peak of the corrugations compared to the bottom corrugation dimension as shown in fig3 the cylindrical section s 25 of the novel cable 1 according to the invention have a length of at least four times that of the corresponding corrugation bottom depending on the overall cable dimensions preferably the cylindrical section is formed with a ten to one peak corrugation width to bottom corrugation width or at least a three millimeter corrugation peak cylindrical section 25 as the length of each cylindrical section 25 is extended the cable 1 begins to approximate the flexibility characteristics of a straight walled cable however at the preferred dimensions the cable 1 according to the invention retains flexibility comparable to a conventional annular sinusoidally corrugated cable with similar dielectric material 7 the reduction in the number of total corrugations resulting from the extended peak cylindrical section reduces the overall materials requirement for the outer conductor of the cable reducing the materials cost of the cable overall with the cable end 9 prepared by trimming just behind a corrugation to expose a cylindrical section 25 for interconnection a sleeve in the form of a crimp ring 27 is placed over the outer conductor 3 and an outer conductor seat 21 of a connector body 19 is fitted into the cable end 9 against the inner surface of the outer conductor 3 as shown in fig4 the connector body connector end 29 shown in fig4 6 is adapted to a type n connector configuration other connector end configurations described hereinabove may also be used as desired the cable 1 is trimmed.