But, I still do chafe at the "solid-core" business.Most of the cat5/6 cables I have looked at do NOT use "solid-core" wire. I mostly see multiple-strand (tiny) copper wire.
I just looked this up recently on another list, in a different context. That is called the a Faraday skin effect, (shield, cage, effect, etc...) <http://en.wikipedia.org/wiki/Faraday_cage> One site I was to had nice animated graphics of what happens. Rick Glazier