George Guerin wrote:
>
> Dave and Dave wrote:
SNIP...
> Dave Henderson
> The problem is the 100 ft tower is guyed with uninsulated guy wires.
> This destroys the possiblities for shunt feed unless the tower is fed
> from a guy wire as a inverted monopole.
Snip...
A point of interest! At my former location I had a 75' tower w/TH6 on
top. I did poor planning of the installation by installing guys at
three equidistant elevations and not insulating the guy wires from the
tower. However, I did break them into non resonant lengths. I shunt
fed the tower, tapped at the top, and it played amazingly well on
transmit but was very noisy, as most vertical are, on receive. I
suspect the guy wires are adding to the electrical length of the tower,
but I'm not an expert by any means on that subject. Just empirical
data. :-) If memory serves me correct, I worked all continents with it
that year and also won MN in low power class for CQWW and ARRL 160 meter
contests. A minor accomplishment yes but none the less, an
accomplishment. I had a friend model it with YA and it seemed to have a
decent pattern. Lucky?...yeah probably so, but I have the same setup at
this QTH and am gg to give it a go, albeit with a better receive antenna
this time.
73,
--
Dick Bodine Amateur Radio Call: WJ0M
Duluth, MN 55804 mailto:rbodine@computerpro.com
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