At 01:02 AM 2007-12-16, Paul Young G0HWC wrote:
>I am building a full size 20m rotatable dipole and wondered what others think.
>Would I be best to have it in a horizontal or in a V configuration?
Although there are no absolutes when it comes to antennas, if you
have a rotatable configuration, the straight dipole would be much
better, since it will have nice nulls off the ends and slightly more
gain broadside. A V configuration, either drooping in the vertical
plane or all in the horizontal plane, will have only very shallow
nulls. (This isn't a bad compromise for antenna that are fixed in
And despite some ebullient Internet sites to the contrary, a
horizontal plane V that is 1/2 wavelength overall has less gain than
a straight dipole and is bi-directional.
Make sure you use a current balun or feedline choke to prevent
feedline radiation from obscuring the dipole pattern nulls.
73, Terry N6RY
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