As if the physics of a signal passing through a cable aren't complicated enough, here's yet another concept to consider.
At audio frequencies, an alternating current passes through almost the entire diameter of the conductor and radiates very little at mic and line voltages. At radio frequencies, signals pass only through the outermost portion of the center conductor diameter due to skin effect and radiate, reflecting back and forth between the outside diameter of the center conductor and the inside diameter of the shield, passing through the dielectric material of the coaxial cable, down the cable's entire length. The velocity factor of said cable is the percentage of the speed of light through copper that the dielectric material imparts on the signal.
Sent from my mobile phone using Tapatalk