[AMRadio] new antenna (again).


Donald Sanders w4bws at comcast.net
Mon Mar 12 19:44:57 EST 2007


Bry, I am using a Carolina Windom 80 meter up about 60 feet. It has a bend
about 120 degrees at 30 feet past the feed point on the long side. I get
really good reports on 80 and 40 AM and CW with the 50 watts and SSB with
100 watts. I use it on 30, 20 and 17 also with the tuner. I have the balun
at the feed point but not the decoupling sleeve at the 22 foot level in the
RG8X feed line.

Healthfully yours,
                          Don W4BWS
----- Original Message ----- 
From: "Bry Carling" <bcarling at cfl.rr.com>
To: <amradio at mailman.qth.net>
Sent: Sunday, March 11, 2007 6:16 PM
Subject: Re: [AMRadio] new antenna (again).


> Has anyone had good results with the Carolina Windom?
> (which isn't really a Windom)
>
> I was planning to build one - mostly for use on 75M and 40M.
> It would have a 90 degree bend at some point, and likely not
> be a flat top arrangement, but rather, an irregular height affair.
> (not really an inverted vee either)
>
> > ----- Original Message ----- 
> > From: "Brett gazdzinski" <brett.gazdzinski at verizonbusiness.com>
>
> > > Yes, I worked on it most of today, the 80 meter
> > > portion was ok for the most part, the 40 meter section was acting
> > > crazy, and kept getting tangled up with the 80 meter part.
> >
> > This form of antenna is a bit unwieldy.  The 40 meter element must be
> > located below the 80 meter element.  It helps if you have separate guy
lines
> > for the two elements.  It also helps if you match the tenson in the
wires,
> > but the antenna can still twist.  Once it is up, however, it is stable.
> >
> > > SWR at 7290 was 5 to 1. That is bad.
> > > I added lengths to the end of the 40 meter part but
> > > it just acted nuts, the 80 and 40 meter segments were interacting..
> >
> > The 80 meter element should behave as a regular dipole, but the 40 meter
> > element (and any highter band elements) will interact.  Typically the
> > shorter elements should be cut about 10% longer than the formula.
>
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