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Old November 8th 07, 03:49 AM posted to rec.radio.amateur.antenna
Owen Duffy Owen Duffy is offline
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First recorded activity by RadioBanter: Dec 2006
Posts: 1,169
Default Vertical antenna problems

wrote in
ups.com:


An alternative way to view your antenna is a large metal ground plane
with the vertical mounted on it and fed 24" up from the base. In that
case, resonances would be lower than expected, explained by the
vertical being 24" longer than design.


Gee, it makes obvious sense, now that you say it. Guess I don't have
to be
afraid of cutting the tubes now.


It is not obvious that you need to cut more than the lowest tube.

Remember, measure twice, cut once...

Owen