jawod wrote:
For the record, I did not have deviating from G5RV specs as part of my
"design" ...

If you used 300 ohm ladder-line, like The Wireman's
#561 or #562, you did indeed deviate from G5RV specs
by making the ladder-line length equal to 31 feet.
For that particular transmission line, 1/2WL on 20m
is around 28 feet.
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73, Cecil http://www.w5dxp.com