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Old October 18th 05, 04:18 AM
Cecil Moore
 
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Default Doublet Antenna question

Ed wrote:
Thanks for the offer, Cecil, but at this time I will decline. I plan
on just putting up as much wire as I can effectively mount between the
two trees, about 100 feet, and just feed it at the center with ladder
line.


That's the antenna I was offering to model for you. You will,
no doubt, run into some pitfalls, for instance an impedance
of 8 ohms or 4000 ohms that your tuner may not be able to handle.
EZNEC can predict such problems before they bite you.

As a data point, the MFJ-974 gives you a matching range of 12-2000
Ohms.

EZNEC can also predict your radiation patterns which are important
on the high bands if you want to hit certain areas of the world.
Rotating my dipole in AZ by 15 degrees made a lot of difference.
--
73, Cecil http://www.qsl.net/w5dxp