Sorry I'm too tired to look up a better example, but
http://members.aol.com/BmgEngInc/Adcock.html
is still pretty good. It's essentially about like the
"phased verticals" the other fellow mentioned, in that
they both result in a "cardioid" pattern, i.e. a sharp
*notch* in the pattern, broadside to the array in this
case.

Thanks, Sluggo, but this is partly an oops!

The BMG pages are a very good resource (as are many RDF sites).

OOPS! The Adcock is just like a loop -- two nulls off both broadside faces.
The version that looks similar (previously mentioned) where you have two
vertical dipoles spaced 1/4 wave and a 3/4 wave connecting cross-feed line
gives the cardioid -- one null.

"Sluggo" wrote in message
news:h3dmk1p0od57ig3q5qpm1qgq5gkdtdq3lm


73, Steve, K,9.D;C'I