Thread: Vertical antenna problems
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Old November 8th 07, 01:33 AM posted to rec.radio.amateur.antenna
Owen Duffy Owen Duffy is offline
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First recorded activity by RadioBanter: Dec 2006
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Default Vertical antenna problems
wrote in news:1194480495.657325.315250@
22g2000hsm.googlegroups.com:

....
The mast and metal roof are well grounded and show continuity
between all panels. The mounting bracket had to be placed 24"
above the roof and, although the mast/bracket/roof are grounded
and bonded, we have placed a grounding cable from the mounting
bracket to the roof.
....

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.

Owen
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