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
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