Topband: Zo of an individual CAT5 twisted pair

[Tom W8JI]

> Ideally = Alice In Wonderland.  I've never met anyone who lived in the 
> ideal world who wasn't smoking that funny smelling stuff.
> 
> This "ideal" makes the wildly optimistic assumption that the 
> terminations on both ends are balanced, which is rarely true. The 
> problem is that noise cancellation depends upon very DEEP cancellation, 
> which required equal magnitude AND equal phase. That's a lot to ask of a 
> real antenna, and of a real circuit, over a limited range of 
> frequencies, let alone a wide range.

I give up trying to explain anything