It was stipulated in the original post that the swr was being
measured at the source end for the 50 ohm line.

He said, "WHAT WOULD THE SWR BE ...?" not what would a
50 ohm SWR meter measure. The SWR would be 1.44:1 on
the 72 ohm feedline no matter what the 50 ohm SWR meter
erroneously measured.

If all one changes is
the impedance of a 1/2 electrical wavelength line, and nothing else,
the answer is 1:1. Did not say anything about measuring the swr
anywhere but at the source.

Go back and read the question again, Tom. He asked:
"What would the SWR be if I substituted the 50 Ohm feedline
with a 1/2 wavelength of 72 Ohm feedline?"

Did he say, "What SWR would be measured?" NO!!!

Did he say, "What would the SWR be ...?" YES!!!

***THE SWR WOULD BE 1.44:1*** on the 72 ohm feedline.
You guys are not answering the question that he asked.
--
73, Cecil http://www.qsl.net/w5dxp

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