I believe at below half a wavelength, the performance of a fullsize antenna
should outperform a reduced size antenna at the same height but be inferior
to the fullsize antenna at a half wavelength above ground, or more. You can
do amazing things with low, but fullsize, antennas -- better than nothing at
all certainly -- but it'll still work better at a half wavelength high, or
more. 73 - Rich, KE3Q
----- Original Message -----
From: "Joe Giacobello" <k2xx@swva.net>
To: "RICHARD BOYD" <ke3q@msn.com>
Cc: "Tim Makins, EI8IC" <contesting@eircom.net>; "towertalk reflector"
<towertalk@contesting.com>
Sent: Monday, August 16, 2004 10:24 AM
Subject: Re: [TowerTalk] Horizontal Loops
> Although I've never owned a a horizontal loop, the scuttlebutt I've
> heard over the years has been they're pretty good for DX on the low
> bands. They must have been high...I guess.
>
> 73, Joe
>
> RICHARD BOYD 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.
> >>
> >>
> >>>_______________________________________________
> >>>TowerTalk mailing list
> >>>TowerTalk@contesting.com
> >>>http://lists.contesting.com/mailman/listinfo/towertalk
> >>>
> >>>
> >>>
> >>_______________________________________________
> >>
> >>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.
> >>
> >>_______________________________________________
> >>TowerTalk mailing list
> >>TowerTalk@contesting.com
> >>http://lists.contesting.com/mailman/listinfo/towertalk
> >>
> >>
> >>
> >_______________________________________________
> >
> >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.
> >
> >_______________________________________________
> >TowerTalk mailing list
> >TowerTalk@contesting.com
> >http://lists.contesting.com/mailman/listinfo/towertalk
> >
> >
> >
> >
> _______________________________________________
>
> 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.
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
_______________________________________________
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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