> Apparently the emphasis in the ARRL antenna book was to
obtain
> a multi-band vee beam rather than a maximum gain vee beam
> as my apex angle of about 50 degrees resulted in the
antenna
> being usable on several bands but not being a "barn
burner".
That's why even with a 300-foot tower and hundreds of acres
of pasture with hundred foot trees I don't use LW arrays.
> EZNEC reported somewhat over 20 dbi gain peak on 10 meters
> which is about as much added gain over a good Yagi as the
> Yagi is over a dipole. This is indeed a barn burner but
EZNEC
> also showed the 3db gain anglewidth to be about 5 degrees
> and the 30db gain anglewidth to be not much wider!
I think you mean -3dB BeamWidth and -30dB?? I don't follow
that.
You might get a copy of Antennas and Transmission Lines by
John Kuecken. It was originally printed by Howard Sams and
reprinted now by MFJ. I used that book way back in the early
70's in college classes. It was based on a series of
lectures by John (Jack) Kuecken.
It has a chapter dealing with LW arrays, and my own
experiments have agreed. I've been generally unsuccessful in
finding a V beam (or even a Rhombic) that has substantially
more gain that a three element Yagi.
If there is a V beam that does 20dBi and has a reasonable
beamwidth for that gain, I'm interested. I can do that with
a large distributed feed curtain array.
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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