I am building the Ramsey Electronics DDF-1 doppler DF. This uses
four 1/4 wave whip antennas on the corners of a square approximately
1/4 wavelength on a side. These are connected to a rooftop switcher
that activates each antenna in sequence. See:
http://www.ramseyelectronics.com/cgi...ction&key=DDF1

My question is, How dependent is this rig on proper whip length to
function properly? Does sensitivity suffer if my whips are
significantly too short, or does the thing simply stop working
properly?

I want to use it for 6M. I have the room for the 55" antenna spacing,
but my antennas are only around 24" long.

Ken KC2JDY

Ken
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