Abstract: An improved method of making a flexible coaxial cable (10) having a dielectric core (12) comprising an inner conductor (14) and a dielectric (16) surrounding the inner conductor (14), and a corrugated outer conductive sheath (18, 20) having a plurality of peaks (22) and valleys (24) of predetermined pitch, comprises the step of substantially simultaneously crimping solely the valleys (24) from at least three angularly spaced directions, such as three equiangularly spaced directions about the longitudinal axis (110) of the outer sheath (18, 20), by using angularly spaced crimping wheels (100, 102, 104) which float to follow the predetermined pitch of the corrugated sheath (18, 20) for embedding the valleys (24) in the dielectric (12, 16) so as to lock the dielectric (12, 16) to the sheath (18, 20) for providing electrical stability for the resultant coaxial cable (10).

Abstract: An improved flexible coaxial cable (24) and method of making same employs an inner conductor (22) having a helically wound dielectric beading (20) wound thereabout in a predetermined pitch dependent on the desired velocity of propogation for the cable (24). A heat shrinkable dielectric tubing (26) surrounds the helically wound beading (20) and locks it to the inner conductor (22) to provide a dielectric core (28) having a constant pitch for the helically wound beading (20) during flexing of the cable (24). A convoluted outer conductor (30, 32, 34, 36) is locked to the tubing (26) of the dielectric core (28) by crimping it to the dielectric core (28) between the helically wound convolutions of the outer conductor (30, 32, 34, 36).