I'm new to the list and run an AV640 with its base about 18' above the ground.
Has anybody modeled this or a similar 3/8 WL loaded vertical, like the R8,
regarding efficiency, radiation pattern, etc? I am curious if there is any
benefit to be had from inscreasing the number of counterpoises or (given the
height) lengthening them.
I know to many of you this is probably not a "real" antenna...but it fits my
yard and its obstacles.
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