RHF wrote:
For One and All,

The Spiro-Helical Antenna -by- Idine Ghoreishian
http://scholar.lib.vt.edu/theses/ava...cted/etdig.pdf

Thesis submitted to the faculty of the Virginia Polytechnic Institute
and State University in partial fulfillment of the requirements for
the degree of MASTER OF SCIENCE In Electrical Engineering

A Mini-Slinky (Metal Spring Thingee) on a Hula Hoop works for me.
What About a Slinky Window Loop Antenna ? ? ?
Try a 'simple' Mini-Slinky on a Hula Hoop Antenna
placed on/in an outside facing Window.
http://groups.yahoo.com/group/Shortw...a/message/2763
http://groups.yahoo.com/group/Shortw...a/message/2741
- Four In-Door "Mini-Slinky" Antennas

Slinky Jr. on a Hula Hoop = A Loop Antenna
plus using a MFJ-1020C {Pre-Selector}
http://groups.yahoo.com/group/Shortwave-SWL-Antenna/message/2741
http://groups.google.com/group/rec.r...fad0a7e37de992


Hula Hoop Loop Antenna and more . . .
http://groups.google.com/group/rec.r...fc1c535a7e8169

http://groups.google.com/group/rec.r...525fb13002c52d


Consider a simple-to-make Dual (2) Slinky Dipole Antenna
using two "Mini-Slinkys" Stretched-Out Horizontally :
These are Fed with 300 Ohm "TV" Twin Lead and
connected to your Radio via the HI-Z (500 Ohm) Terminals.
http://groups.google.com/group/rec.r...0aacb8e4723daa

ABOUT - Slinky Antennas - More Then You Wanted To Know
http://groups.yahoo.com/group/Shortw...a/message/5367
http://groups.google.com/group/rec.r...f6729ce326591b

Rigging the Slinky Dipole Antenna
http://groups.yahoo.com/group/Shortw...a/message/5389
http://groups.google.com/group/rec.r...f97f29cd917b1e

Recommend - That you Set-Up the Two SLINKYs in the Attic using
a Coax Cable Feed-in-Line and a Matching Transformer (Balun).
http://groups.google.com/group/rec.r...0e10e6042b7eda

Configure - The SLINKYs as a "Windom" Antenna {Off-Center Fed Dipole}

SEARCH - Rec.Radio.Shortwave (RRS) NewsGroup
For "Slinky Antenna" Info -by- RHF
SLINK ANTENNA INFO = http://tinyurl.com/9zaug
http://groups.google.com/group/rec.r...a+ rhf&qt_g=1


That 'little' Something Extra - TORUS TUNER -
The Torus Tuner Loop Antenna - A Review in Words and Pictures
[ Edek 26" Inductively Coupled MW Loop ] - by RadioIntel.Com
http://www.radiointel.com/review-edek.htm
REF = http://www.torustuner.com/.
Consider a 'home-made' Hula-Hoop Loop Antenna.
http://groups.google.com/group/rec.r...34348788936b04



there be... circles within circles - iane ~ RHF
.
All are WELCOME and "Invited to Join" the
Shortwave Listener (SWL) Antenna eGroup on YAHOO !
http://groups.yahoo.com/group/Shortwave-SWL-Antenna/
SWL ANTENNAS GROUP = http://tinyurl.com/an6tw
.
Some Say: On A Clear Day You Can See Forever.
I Believe : On A Clear Night You Can Hear Forever
. . . and Beyond , , , The BEYOND ! ! !
With a Shortwave Listening Antenna of your own making.
"If You Build It {SWL Antenna} You Will Hear Them !"
http://groups.yahoo.com/group/Shortwave-SWL-Antenna/
SWL ANTENNAS GROUP = http://tinyurl.com/an6tw
.
.
. .
.

I think there is a math error on page 85, subsection ii, jeesh
check it out 90+ pages, I got dizzy looking at the math in this