Gene Fuller wrote:
Cecil Moore wrote:
Time permitting, I will work up the phasor diagrams of
the component voltages (or currents) at the junction
where rho = (600-100)/(600+100) = 0.7143

So how many nanoseconds does that 36.6 degree phase shift represent?

As far as impedance discontinuity *points* go, a nonsense
question.

How many nanoseconds does it take for a signal to travel
through a dimensionless point???? Well, let's see. What
is the speed of light multiplied by zero? Hmmmm, that's
a really tough one.

At any instant of time the forward voltage on
one side of the discontinuity *point* has a relative phase
difference from the forward voltage on the other side of
the *point*. This relative phase difference is constant as
long as the conditions remain unchanged.

The reason that it takes nanoseconds for a signal to travel
through a 75m Bugcatcher loading coil is that the coil is
NOT a dimensionless point. Mine occupies almost 200 cubic
inches. Loading coils with zero dimensions exist *only* in
the human mind and are impossible in reality.
--
73, Cecil http://www.w5dxp.com