Jim:

I have no information to answer your two questions numerically, but I do want to point out the following: Both the
impedance and velocity factor will be different in the solid sections and in the windows. So, if you need great
accuracy, good luck!

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Crazy George
The attglobal.net address is a SPAM trap. Please change that part to: attdotbiz properly formatted.
"Jim Leder" wrote in message ...
What is LIKELY to be the true impedance and velocity factor of 450 ohm
window 18AWG solid polyethylene ladder line? I see everything from .85 to
.95 and 375 to 440. Most seem to think it's around .865 and 390 ohms. Is
this close enough? I have no way of actually measuring it.
BTW, same as what the Wireman sells.

Sorry for asking a question that's been asked before, but it does have many
ambiguous answers and I'm not sure what it really is. I'm using for a
matching stub and need to fairly close.

Thanks...

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***** Jim Leder *****
IBM retiree since 1999
http://home.fuse.net/k8cxm