JosephKK wrote:

95% plus of the transmitter or received energy is safely contained
between center conductor and shield. That is how the physics works
out. All of the feed line center conductor current is pretty well
matched by the same current in the shield. It is the closely coupled
concentric magnetic fields that make coax work so well.


It's unfortunate that this isn't true. If it were, it would make our
lives a lot easier. Anyone interested in learning more about this topic
might take a look at http://eznec.com/Amateur/Articles/Baluns.pdf.

Roy Lewallen, W7EL