[Elecraft] Antenna wire question for long spans
Stuart Rohre
rohre at arlut.utexas.edu
Fri Aug 18 19:14:05 EDT 2006
For an EOC operation, you want an omni direction of coverage. Put a usual
antenna height, and end fed 270 foot wire on 40 m or even 80, is going to be
getting to be directional toward the far end of the wire.
MUCH better for EOC use is to put up such a wire as a center fed doublet.
Then it could be tuned on any band 60m 75m 40m, 20m and up.
If your primary coverage is your own state and adjoining states, put it up
at an NVIS height, which is 0.15 wavelength or less at the lowest band you
might use.
Stuart
K5KVH (Veteran of a very long 400 foot wire, which did not work out as I
had hoped ie, little DX as it was TOO directional!)
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