Literature on Small Transmitting Loop (STL)

References to more information in books and journals.

(All contributions gratefully accepted, I have slipped behind with this of late)

Finding out more about STLs

SMALL LOOP ANTENNAS in Radio Communication Handbook 6th Ed (1994), Published by RSGB ISBN 1 872309 24 0 Pages 12.93 to 12.95 (Quotes 6 references)

LOOP ANTENNAS: THE FACTS, NOT THE FICTION by Henk AJ (G4XVF) in The ARRL Antenna Compendium Vol 3 (1992), Published by Amateur Radio Relay League. ISBN 0 87259 401 7 Pages 99-107 (and 4 references) - (Previously published in Radio Communication 1991 part 1 September p51-53, and Part 2 October p47-50).

FUN WITH SMALL LOOP ANTENNAS ON 80 METERS by Taylor JE (W2OZH) in The ARRL Antenna Compendium Vol 3 (1992), Published by Amateur Radio Relay League. ISBN 0 87259 401 7 Pages 108-113 (and 5 references)

MORE ON SHORT LOOP ANTENNAS (PT1) by Roberto Craighero I1ARZ. Radio Communication 1992 March p66-69 (2 refs)

MORE ON SHORT LOOP ANTENNAS (PT2) by Roberto Craighero I1ARZ. Radio Communication 1992 April p30-31(4 refs)

The Magnetic-8 145MHz antenna report of a 2m double loop magloop made from 1m of welding rod published in ELECTRON (NL) 1/97 ( Frits HV Geerligs PA0FRI) reported by Erwin David G4LQI in Radio Communication (1997) May, p46 (3 references).

MORE ON COMPACT LOOP TRANSMITTING ANTENNAS (Technical Topics) by Pat Hawker (G3VA) Radio Communication October 1991. p30-32). This item simplifies the calculations, is practically orientated and offers useful tips for home construction.

DIRECTIONAL MAGNETIC LOOPS (Jim Borwn (G0KZV) Radio Communication Jan 1998 page 53.) Jim reports some data he has had stored away for a time. He has looked at the radiation pattern of a single turn magloop, and tried to make it more directional. By building a two turn loop with a phase change, he shows a fishtail type of radiation pattern. It isn't clear if this was measured close to, or (perhaps more usefully) at a distance from the antenna. Whatever, it worked!

Loop references in Radio Communication

Many thanks to the organized mind of Wallace GM0GNT for the effort involved here with some Radio Communication lists.

Compact HF antenna Sep 1983
Loop Antenna Amplifier,TT Mar 1986
Loops and Dipoles,TT Apr 1986

Compact Transmitting Loop Antennas,TT Jun 1986
Magnetic (small Loop) Antennas,TT Oct 1986
Magnetic (Loop) Antennas, TT Dec 1986
Small Loop Antennas,TT Mar 1987
Passive 1.8MHz Shielded Loop,TT Mar 1987
Feedback on 1.8MHz Shielded loop, TT May 1987
Electrically Tunable HF Loop, I1ARZ Feb 1989
HF Loop Antenna, Error Mar 1989
Tuning the I1ARZ Loop,TT Aug 1989
IC Tuning Controller for the I1ARZ Loop, TT Nov 1989
Army Low Profile Loop Antenna,TT Jul 1990
Loop Transmitting Antennas Again, TT Dec 1990
A Magnetic Loop Antenna for the Low Bands,I1ARZ Feb 1991
Loop Antennas Facts Not Fiction Part 1, G4XVF Sept 1991
Loop Antennas Facts Not Fiction Part 2, G4XVF Oct 1991
Small HF Transmitting Loops,Eurotek Oct 1991
More on Compact Transmitting Loops, TT Oct 1991
A Portable Short Loop Antenna for the 20m Band Mar 1992
More On Short Loop Antennas, I1ARZ? Mar 1992
More on Short Loop Antennas, I1ARZ Apr 1992
Roof Space Dual Loop Magnetic Loop,TT Feb 1993
Loop Antennas For the HF Bands, P.Hart Jul 1994
Experimental Magnetic Loop Antenna,GW3JPT Feb 1994
Magnetic Eight, PA0FRI May 1997
Dipole theory of operation,TT Nov 1997
Directional Magnetic Loops Jan 1998
Tuned Transmitting Loops Controversy,TT Feb 1998
Transmitting loops -In Brief, TT Jul 1998 ***NEW

And from Ted KX5P the following pointers:

QST-June 1996 p33
QST-November 1993 p37
QST-May 1994 p33
QST-November 1994 p51
ARRL Antenna Book, 17th Edition, page 5-11
73 Amateur Radio Today - May 1995, page 44
Small High Efficiency Antennas, Ted Hart, W5QJR Antenna Products

(posted to Usenet by) John Crabtree <[email protected]

Small, High-Efficiency Loop Antennas, Ted Hart, QST, June 1986, pp33-36 has basic equations, uses a gamma match for coupling
Honey, I shrunk the antenna, Rod Newkirk, QST, July 1993, pp34, 35 and 39 multi-turn loops for 30-10 meter ham bands. Interesting, as it gets over the typical single-turn loop matching problems.
An update on compact transmitting loops, QST, Nov 1993,pp37-40 has a comparison of sizes and ranges of commercial products, shows details of a coupling loop with a Faraday shield, and useful graphs of gain vs frequency, and bandwidth vs.frequency for different size loops.
You can build: A compact loop antenna for 30 through 12 meters, Robert Capon, QST, May 1994, pp 33-36 a constructional article, for a single turn loop 2' 7'', dia with a coupling coil. If you get a copy, make sure that the picture on the first page is legible.
The MFJ-1786 High-Q loop Antenna for 10-30MHz, Rick Kleinschmidt, QST, Aug 1994, pp 62-64 a favourable product review
A Homebrew Loop Tuning Capacitor, Bill Jones, QST,Nov 1994, pp.30-32 only of interest if you want to feed a loop with a 100W TX.
Small loop design for HF QRP, Jay Jeffery, 73 Amateur Radio Today, April 1997,pp 42-43 a very straightforward article with some simple inductance equations

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