Brian Reay wrote:

"Cecil Moore" wrote:
From "Radio Handbook" by Bill Orr, 20th edition, copyright 1975,
section/page 27.9: "The feedpoint impedance of a ground plane may
be raised to about 50 ohms by drooping the radials down at a 45
degree angle." Anyone got an earlier edition?

Not of that book, but similar wording in ARRL's 1972 "VHF Manual". I found
it, but not the book I was looking for.

You're right, page 179: "Another matching trick with the ground-plane
is to droop the radials downward, adjusting their angle below the
horizontal until the antenna feed impedance becomes 52 ohms. This
usually occurs at about a 45-degree angle."
--
73, Cecil http://www.qsl.net/w5dxp


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