On 6 Jan 99, k6ll@juno.com <k6ll@juno.com> wrote:
>
> On Wed, 6 Jan 1999 09:00:51 -0600 n4kg@juno.com (T A RUSSELL) writes:
> >
> >Since you already have a stacked pair of TH7's,
> >your best bet would be another tribander on another tower.
> >
> >I would not advise adding another beam at 25 ft but
> >instead recommend a second tower between 35 and 40 ft.
> >This height is optimum for the higher angles supported by
> >the ionosphere during daytime conditions and is still useful
> >at night, especially to Africa on 20M. By having a second
> >(short) tower, you will benefit from the ability to rotate the
> >second antenna as needed.
>
> Good advice, but make sure the other tower is far away from
> the existing tower. When the first tribander's directors are facing
> the second tribander's reflectors, the first will be seriously
> degraded.
>
> I just put up an A3 at 40', and it works great, except when it's
> pointed at the tail end of the KT-34XA, which is about 10 feet
> higher, on another tower only 30 feet away horizontally. Reports
> from local hams say that my signal on the A3 goes up about 2
> s-units when I swing the XA 90 degrees out of line.
>
> Dave Hachadorian, K6LL
> Yuma, AZ
> K6LL@juno.com
>
I should have included in my first post, another tower really isn't an
option (that would make it easy!)
73 Barry
--
Barry Kutner, W2UP Internet: w2up@mindspring.com
Newtown, PA Frankford Radio Club
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