Cecil Moore wrote:

Jim Kelley wrote:
The nature of things a point '+' are undefined,

Nope, they are not.

There can exist no real point where the characteristic line impedance is
both 50 ohms and 150 ohms.

There are no reflections on the 50 ohm feedline because it "sees" 50
ohms at point '+'.

Oh my gawd, somebody has brainwashed our Cecil! Maybe the pod people
have invaded Texas! :-)

What about cancelled reflected waves, destructive interference and all
that?

73, Jim AC6XG