Gary, N4AST wrote:
"Do you know of anyone that has an infinite length of transmission
line?"

I may as soon as the line constructor is finished. Now, I can`t say that
I do, but for some purposes a line of random length which is terminated
in Zo serves as well as an infinite line of the same Zo.

A dissipation line, of course, must have enough length not to overload
the termination resistor at the end of the real line which does have an
end.

Best regards, Richard Harrison, KB5WZI