"Yuri Blanarovich" wrote in message
...
Howdy Antenna NGers,
(snip)
So after all, those "dumb" hams pointed out 50 years of misinformation in
even
ARRL "bibles" like Antenna and Handbooks :-(yep, latest 2005 "revision"
still
has it in it)
I think you are taking what ARRL says out of context. I will quote from page
16-7 in The ARRL Antenna Book, 20th edition...
"The loading coil acts as the lumped constant that it is, and disregarding
losses and coil radiation, maintains the same current flow throughout. As a
result, the current at the top of a high-Q coil is essentially the same as
at the bottom of the coil. This is easily verified by installing RF ammeters
immediately above and below the loading coil in a test antenna."
Don't overlook the part about disregarding losses and coil radiation. And,
don't overlook the part about verifying the current with ammeters. Have you
done that?
The ARRL book doesn't even recommend using a loading coil with an 8 foot
whip on the 10 meter band. Read the whole chapter. Note that your "coil" is
7.4% (6.7 degrees) of the antenna system length. It is no longer the lumped
device which is assumed in the book. Please repeat your experiment on an
8-foot whip at 40 meters and then verify with current meters.
If you can still make the same assertions for 40 meters, submit your
findings to the ARRL for publication. If they find them worthwhile, I'm sure
they will publish them.
John
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