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Old April 10th 06, 12:41 AM posted to rec.radio.amateur.antenna
Owen Duffy
 
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Default Velocity Factor (VP) for RG8X?

On Sun, 09 Apr 2006 16:00:48 -0700, Roy Lewallen
wrote:

I have one piece, and it measures 0.745.


This is a bit like the previous discussions on Buryflex!

I read an interesting article on the 'net by NEC on a production
system for foam dielectric coax for low microwave frequencies... it is
clearly a greater challenge than extruding PE for solid dielectric.

Reg's response is interesting, I draw the conclusion that a 'quick and
dirty' confirmation of quality of a foam cable is whether its measured
VF is close to spec, it is it off, so is the Zo likely to be off.

Owen
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