Joe,
The coax can be viewed as a series of lumped constants; that is, series
inductors with many shunt capacitors to ground in between the
inductors. In essence, a delay line. At standard temperature /
pressure / etc. the delay line assumes a given value. If any external
influence impacts the coax then it assumes a new value because of :
1. Capacitive and inductive changes from dimensional shifts OR
2. Changing dielectric properties OR
3. Some combination of the above
Thus the delay line's value (VOP) changes, and, naturally the impedance
as well.
Bill....WB6BNQ
Joseph Gray wrote:
I assume you mean that impedance has an effect on VOP? Can you point
to any internet sources that explain this effect? Preferably
something
not overly technical.
Joe Gray
W5JG
On Sun, Apr 3, 2011 at 4:11 PM, paul swed <[email protected]>
wrote:
> It does change vop
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