"Owen" wrote in message
...
On Wed, 6 Jul 2005 18:32:50 -0400, "Walter Maxwell"
wrote:

Well, Owen, you might take a look at Appendix 8 of Reflections 2, which
can
be found on my web site at w2du.com. Click on 'Read Appendices from
Reflections 2', the click on Appendix 8. I think what you'll see there
will
be of interest.

Thanks Walt. I had a look at it, and although it doesn't state as
much, isn't it correct only for distortionless lines (Xo=0)?
Owen

As I understand it, Owen, a line has to be lossless for Xo to be 0, while
distortionless lines have loss but have equal series R and shunt G. All
lines that I've measured have a small negative X, that would be zero if the
line were lossless. So I'd have to say that the material in Appendix is is
correct for standard lines. Distortionless lines are normally found only in
long-distance phone lines used at voice frequencies, not RF. Or am I missing
something?

Walt,W2DU