Check out this link: http://ka1fsb.home.att.net/loopcalc.html
To partially answer your question, the "Delta" loop is just a basic
description of the "shape" of a full wave loop antenna. A full wavelength
loop antenna can be in the shape of a circle, square (quad), triangle
(delta), or most any other geometric shape (hexagon, octagon, etc). The
shape mostly depends on what you have for supports (tower, trees, masts,
etc), and what shape will fit on your property. The "Delta" shape is easiest
since it can be installed with a single support (mast, tower), with one
corner of the triangle at the top and the two lower corners supported on
stakes in the ground (preferable about 10' high to get the bottom wire leg
out of reach for safety).
Hope this helps,
Roger, N0VR
-----Original Message-----
From: Richards [mailto:jruing@ameritech.net]
Sent: Wednesday, June 25, 2008 9:55 AM
To: mattpatt@1starnet.com
Cc: towertalk@contesting.com
Subject: Re: [TowerTalk] Delta Loop compared to Dipole (actual experience)
Novice Alert: Could someone please identify which section of my
ARRL Antenna book covers this "Delta Loop" - as that term does
not appear in the Index. I do not mind doing the homework on stuff,
but would like to be sure I am reading what you are talking about.
I have the 21st Edition, but I doubt if the sections have changed too
very much over the past few years.
I am thinking you are talking about what the book calls a "skywire"...
Right? That would mean an 80 meter loop of this type would need
approx 272 feet of wire - or 68 feet per side, or in my case, to sides of
fifty feet, and two sides of 86 feet which, if I had the right supports,
would just about fit.
The book says it need not be tuned or pruned to a specific length as
that will not matter much. If true, that is good, as that allows for some
variation in length depending on how one's lot (trees, house, and other
supports) are available.
Is this the topic I should be reading?
Thanks. /// K8JHR ///
===================================================
Matt Patterson wrote:
> I use a delta loop on 40m feed at one of the corners
===================================================
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