I believe in horizontal loops!
I remember using a 4 or 5 wavelength long horizontal
loop at VP2MF's QTH years ago while operating the CQ
CW contest as VP2M. It was fed with open wire line and
was at 60 feet or so. This antenna worked well on 80,
but was outstanding on 40. It was comparable to
Pedro's KP4AST's 3 el at over 100 feet!! If I remember
correctly, I think Chip, K7JA operating there, beat me
by a few mults, but I was right there on qso's. Boy!
I guess I'm dating myself here!
Johnny KE7V ex WA7OTT
--- RICHARD BOYD <ke3q@msn.com> wrote:
> Many people who have horizontal loops have them low,
> which is thought to be
> good for a big signal close-in -- some of us have
> experienced having trouble
> working close-in stations with antennas that are
> high -- but a horizontal
> loop that's at least a half wavelength up should
> work fine for DX, and I
> expect will be "quieter" (less QRN reception) than
> other antennas, at least
> in some conditions. 73 - Rich, KE3Q
>
>
> ----- Original Message -----
> From: "Tim Makins, EI8IC" <contesting@eircom.net>
> To: "Tom Rauch" <w8ji@contesting.com>
> Cc: "TowerTalk" <towertalk@contesting.com>
> Sent: Sunday, August 15, 2004 12:30 PM
> Subject: Re: [TowerTalk] Horizontal Loops
>
>
> > So, if the loop is big enough, and has the right
> angles, it becomes a
> > useful
> > DX antenna ? The next question would have to be:
> How do you work out the
> > required angles ?
> >
> > I was just wondering what kind of wire antenna for
> DX might be useful if I
> > put up poles at the 4 corners of an acre of land.
> >
> > 73s Tim EI8IC
> >
> >
> > ----- Original Message -----
> > From: "Tom Rauch" <w8ji@contesting.com>
> > To: "Tim Makins, EI8IC" <contesting@eircom.net>;
> "TowerTalk"
> > <towertalk@contesting.com>
> > Sent: Sunday, August 15, 2004 11:12 AM
> > Subject: Re: [TowerTalk] Horizontal Loops
> >
> >
> > > > If a folded dipole performs like a normal
> dipole, why
> > > doesn't a horizontal
> > > > loop perform like a rhombic ?
> > >
> > > Because a Rhombic is diamond-shaped uni- or
> bi-directional
> > > antenna normally more than 2 WL on a leg and has
> the angles
> > > adjusted so the lobes from all four sides align
> at a low
> > > wave angle.
> > >
> > > A loop generally has no particular adjustment of
> angles or
> > > length.
> > >
> > > A Rhombic also has very poor efficiency along
> with many
> > > spurious lobes, and so is not really a very high
> gain
> > > antenna for the physical area. The big Rhombic
> at ARRL HQ
> > > for example was reported to have about the same
> signal as a
> > > three element monoband yagi. They do however
> produce useable
> > > patterns over very wide bandwidths.
> > >
> > > 73 Tom
> > >
> > >
> > > _______________________________________________
> > >
> > > 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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_______________________________________________
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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