Further to Rys's comments (congrats on the TX3D QSO Rys). I have been
testing a "DHD". My testing has been on a smaller scale as I don't have the
real estate for long Beverages and broadside arrays, So this info might
interest the guy with a small lot. I have been testing a single DHD right
next to a single EWE and a short reversible 325ft Beverage. Mine is
pointing South to Africa. It was the only Antenna of the 3 I could hear
VP8DMN on (just inside its 3dB points). Like Rys I often think something is
"wrong" until I tune on a signal, it's so quiet but brings in the DX. It
also works very well on 80m. As one would expect it becomes fairly omni
directional on 40m, but surprisingly has its uses there. I find it hears
better than my full size 40m loop at times.
My bottom wire in 2m off the ground. I went for 1K3 termination. Note: It's
not easy keeping 2 poles up at 9-10m at each end, guys required if you are
near the sea and its windy! F/B excellent, another 6dB on my 5m X 10m EWE. I
Use a preamp, but don't always find its needed.
My testing has been since December 18th. I'm very happy with mine. A picture
can be found here. http://tiny.cc/8xpZf
I hope to put another up to the East once the weather improves.
Thanks to all those for their development work.
This is the antenna to go for on a small lot, where you would benefit from
high F/B and some great nulls off the side and a narrow lobe. If you can fit
one in go for it, you won't be disappointed.
Neil G0JHC
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UR RST IS ... ... ..9 QSB QSB - hw? BK
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