Keith Dysart wrote:
But the rules for black boxes do not allow measurements
on the inside. This is how they help clarify the thinking.

So instead of sweeping technical facts under the rug,
you hide them in a black box. In both cases, the only
apparent purpose is to maintain ignorance.

It seems that whatever part of the system you don't
understand, you draw a black box around it so you
don't have to understand it.

So I ask you once again, given the following two stubs:

--43.4 deg 600 ohm line--+--10 deg 100 ohm line--open
Vfor1--|--Vfor2

--43.4 deg 600 ohm line--+--46.6 deg 600 ohm line--open
Vfor1--|--Vfor2

What are the phase shifts between Vfor1 and Vfor2 for
the two cases?
--
73, Cecil http://www.w5dxp.com