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" <[email protected]>
To: "Tom Rauch" <[email protected]>
Cc: "TowerTalk" <[email protected]>
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" <[email protected]>
To: "Tim Makins, EI8IC" <[email protected]>; "TowerTalk"
<[email protected]>
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
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any
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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.
_______________________________________________
TowerTalk mailing list
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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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_______________________________________________
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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