Jim, AC6XG wrote:
"Ummm, isn`t that an example of reactance?"

Terman on page 88 of his 1955 edition says:
"The characteristic impedance Zo is the ratio of voltage to current in
an individual wave---; it is also the impedance of a line that is
infinitely long or the impedance of a finite length of line when ZL =
Zo. It will be noted that at radio frequencies the characteristic
impedance is a resistance that is independent of frequency."

Isn`t that succinct and beautiful? Wish my thoughts were as clear and
true. We lost a treasure when he passed away.

Best regards, Richard Harrison, KB5WZI