Topband: Elevated Radials
Wed, 9 Feb 2000 11:46:58 -0500
> Stikes me that this would be an ideal time to further confirm the
> statements in ON4UN's book, Low-Band DXing. See chapter 9, para 2.2.12 and
> 2.2.13. The existing radials might then be moved to concentrate them under
> the elevated radials, as well as disconnecting them from any common
> ground/earth connection per his instructions.
The most important thing to remember is that ALL other ground
systems need to be removed and the antenna has to be a relatively
clean system, otherwise the test doesn't mean anything outside of
that one particular system and set of test conditions.
I had a 75 meter dipole that, when fed like a long wire, was several
dB louder than any other antenna to another local station. One of
my friends saw over twenty dB change on 75 meters when he went
from an antenna tuner to matching stubs as measured locally. You
can bet something weird was going on in both cases.
73, Tom W8JI
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