Might be interesting to someone out there....

I built a copy of the 432 Quagi (8 elements) that appeared in the 1988
ARRL Antenna Book. It has a "claimed" gain of 13 dBi (which, if I
remember right, is 10.8 dBd).

I didn't lament over getting all the elements within 1/128" of an inch
and it came out OK. The only place I needed to deviate fairly
significantly is that I needed to move the first director about 3"
forward of the original design to get a better match. I have no idea
what this will do to the radiation pattern. As designed, mine had a
best SWR of 2:1, causing the solid state final in the Yaesu 857 to start
shutting down such that I was getting about 6 or 7 Watts out instead of
20. Moving the first director forward as noted got the SWR to 1.2:1.
Much as I would expect since a quad element at resonance is about 60
Ohms I believe. Anyhow...

Measured it on the antenna range today at our VHF group's
(http://www.nlrs.org) annual get-together. My antenna came in with a
9.6 dBd gain. I can live with that! It was only 0.3 dB below the
reference antenna, an 11 element Yagi. Seems to have a very sharp pattern!

Anybody have experience with this type antenna? I was impressed enough
to think about giving the 222 version a try...

Scott
N0EDV