Topband: Fw: Short Bogs

[Charlie Cunningham]

All true!  NL7Y was referring to  coated wire, though, which is certainly
different than the velocity factor of coax propagating TEM waves.

I didn't know that Cebik's site is still up. That's good to know!

Charlie, K4OTV


-----Original Message-----
From: Topband [mailto:topband-bounces at contesting.com] On Behalf Of Roger
Parsons
Sent: Sunday, December 30, 2012 5:01 PM
To: Topband
Subject: Topband: Fw: Short Bogs

Tom was not referring to the sheathing on a cable but to the velocity factor
of coax. Not the same thing at all.

It is well established that covering a cable with a dielectric will change
its electrical length. The late LB Cebik's site (which is still accessible)
quantifies exactly how much with different dielectrics. It can range up to
about 7 %, and in my experience LB's figures are spot on.


73 Roger
VE3ZI
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