Subject: [Towertalk] Force 12 Sigma verticals
> Has anyone built a triangle or 4square array using the Force 12 Sigma 80
or
> 40 verticals? If so, what are your reactions both good and bad. Seems to
> me like it might well be an effective solution (but expensive) to limited
> space where a full sized radial screen is not feasible.
Doesn't have to be expensive... I use a pair of vertical dipoles 45ft
vertical section, and 66ft top and bottom capacity hats. I agree with John
Petrich, W7FU.. My dipoles are as good as any of the verticals that I have
built here, and they're two dimensional. I suspend my phased pair from a
single 60ft timber pole. The top hats slope a bit. The pair cost less than
$20.... a little less than the Sigmas !!! and are just as effective, and
probably more so, as they are 10ft taller. (than the 80m Sigmas)
I also use a 45ft Vertical section "double L", or "sideways U dipole" a
la Don K2KQ ...http://www.yccc.org/Features/double_l.htm It's also
extremely easy to rig, is very effective, and minimal cost. It got me PW0T,
and JT1CO in the last couple of weeks.
73
John EI7BA
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