[mythtv-users] Way OT: High-speed Data Service Delivery

[Jay Ashworth]

----- Original Message -----
> From: "David Watkins" <watkinshome at gmail.com>

> > The NVP (nominal velocity of propagation) for a copper pair is
> > typically in the order of 70% of the speed of light in a vacuum. When
> > testing copper cable, to get an accurate length you need to set the
> > NVP in the tester - either by using a manufacturers figure, or by
> > testing a sample of cable.
> >
> > And for fibre, yes you are correct.
> 
> ... which also happens to be approximately 70% of the speed of light
> in a vacuum.

Color me surprised; he's right; I'm wrong.

  http://www.cable360.net/ct/sections/columns/broadband/45766.html

Cheers,
-- jra
-- 
Jay R. Ashworth                  Baylink                       jra at baylink.com
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