----- Original Message -----
From: "py2cw160 "Mac"" <py2cw160@terra.com.br>
To: "Jose Ng Lee" <hp2cwb@cwpanama.net>
Sent: Wednesday, September 18, 2002 2:30 AM
Subject: Re: Topband: 160m simple antenna
> Hi Jose
> Many decades ago, W1BB, Stewart, who was our "Top band best
> representative", sugested the Inverted L, as the solution for the question
> presented by you. It's based on the quarter wave vertical antenna,
operated
> against a ground surface. Stewart actually sugested an slight change in
the
> "quarter wave" dimension, as a small optimization. The antenna consists of
a
> vertical element (can be a wire or a metalic pole) that bents at it's top,
> ( inverted L ) with a total lenght (vert + horiz) of 165 to 175 feet. It's
> fed by coax with a variable capacitor (low voltage-old radio receivers
type)
> of 500 to 800 pF in series at it's base. The "other side of the antenna"
is
> the ground surface. Some quarter wave radials would provide this ground
> system if you are not in a wet sand beach. Will work better with the:
> 1) Highest possible vertical element.
> 2) Highest number of radial wires departing at feed point and grounded to
> water system pipes, ground rod(s) and buried metal objects.
> The tuning consist of adjustments of antenna lenght and capacitor to
provide
> lowest SWR reading. If you don't have the capacitor you can optionally use
> an antenna coupler in the shack, because the losses in the coax in top
band
> are low, despite an SWR not 1:1 in the cable.
> This antenna provides Vertical polarized wave (thanks to the vertical
> element) and also horizontal. The vertical polarized wave being useful for
> DX.
> I will scan W1BB original drawing/comments and send you. It's a simple
> antenna for the beginning. (In Stew words: it's an excellent antenna for
> begginers)
>
> 73, good DX
>
> Mac, PY2CW
>
>
>
> ----- Original Message -----
> From: "Jose Ng Lee" <hp2cwb@cwpanama.net>
> To: <topband@contesting.com>
> Sent: Tuesday, September 17, 2002 5:48 PM
> Subject: Topband: 160m simple antenna
>
>
> > Hi,
> >
> > Can someone suggest me of a good and simple antenna to put up on 160m.
I
> > don't have too much space in my backyard. Will like to have something
> > simple to put a decent signal and work the DX on this winter season.
Any
> > diagrams or websites will be appreciated.
> >
> > 73
> >
> > JOSE / HP2CWB
> >
> >
> > _______________________________________________
> > Topband mailing list
> > Topband@contesting.com
> > http://lists.contesting.com/mailman/listinfo/topband
> >
>
>
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