Dan Bloomquist wrote:
"And can be seen clearly by looking at the reflection of a Smith chart
upside down."

Clever idea! Standing on my head, peering at a Smith chart from that
perspective, did not much change my view of the R/Zo and jX/Zo circles.

I agree the Smith Chart is a marvelous way to visualize what is
happening on a transmission line.

Best regards, Richard Harrison, KB5WZI