Get hold of a copy of ON4UN's Low Band book. It is available from
ARRL. Johns book is considered the bible for low band antennas. That
book will tell you that a 12 inch tower will be resonant on 3500 if it
is about 64 feet long, and a tower about 78 feet long feeds easily with
some series capacitance in the feedpoint. A vacuum variable of about
1000pf should allow you to easily tune to any point on the 75/80 band.
All assumes 5 ohms of loss in the radial system. 73 and Merry
Christmas bob de w9ge
>I'm wanting to put up a full sized 80 meter vertical made from Rohn 25 in
>my pasture.
>Marty Haley AB5GU
>
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--
Bob Finger
8511 Swann Haven Road
Easton MD 21601
cell 703 408-2176
e-mail to: Finger@GOEASTON.NET
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