Barry,
With a couple hundred hours of A/B testing of Flags, Pennants, Deltas,
Diamonds, K9AY's, and short Beverages on a 2 acre urban lot, I tell you
that a Rotatable Flag is the best compromise. You can see what I used on my
web site at:
www.qsl.net/w7iuv
A properly constructed 300 foot Beverage will be a slight bit better than
the Flag, but only in one direction. The deep null off the back of a
rotatable flag will allow you to null a point noise source or peak on a
signal from any direction.
Pennants are nearly as good as the flag configuration, with the K9AY about
a tie for second place. I found that both the pennant and K9AY have more
interaction with elevated radials and TX antennas that the flag
configuration. The best setup is multiple switched flags with close spaced
broadside arrays in the favored directions. Spacing of 250-270 feet will
provide more local noise rejection, however 315 foot spacing would be
optimum for a quiet location.
Good luck with what ever you try.
Larry - W7IUV
|