there is a 2 element design on my web site that is extremely simple and
compact. http://www.k1ttt.net/technote/doppler.html

"George" wrote in message
link.net...
Is anyone familiar with three-element quarter-wave or half-wave (Adcock)
Doppler antennas for RDF applications? These antennas are most commonly
seen as four-element designs, but I'd like to build a three-element
version
that trades off directional accuracy for smaller size. I've come across
articles on the Web stating that they *SHOULD* work, but I haven't found a
reference to one that has actually been built.

Thanks in advance.

George K6GW