A homemade magnetic loop for 10-17 meters by PA3CQR
Magnetic loop antennas are very compact hf antennas. If properly build they can be used for transmitting. There are already many good theories about them so i will keep this part of the story very short.
http://homepages.ipact.nl/~geurink/magneticloop/

A Magnetic Loop Antenna by G3YCC
Various articles have appeared describing magnetic loops for HF use, some with complicated methods of remote tuning and the antenna can be quite a useful and interesting project.
http://www.zerobeat.net/g3ycc/loop.htm

A magnetic loop antenna for HF by VK3YE
Able to cover all frequencies between 3.5 and about 10 MHz, the loop described here is directional, does not require a radial system, and stands just 1.8 metres tall. Most parts needed can be purchased at a hardware shop.
http://home.alphalink.com.au/~parkerp/gateway/nodec97.htm

HF Receiving Loop by VK2ZAY
This experiment was inspired by Peter VK2TPM's receiving loop experiments for 80 metres. My loop is a bit smaller than Peter's, a single turn, the circumference is 4 metres + a little for the aligator clip lead, made from medium gauge mains lamp cord ("zipcord" for the yanks).
http://www.vk2zay.net/article.php/141

Magnetic Loop Antenna by LA6NCA
For communications from 20 to 200 km is this small loop better or as good as a full size field mounted dipole. An HF whip antenna is also mounted on the car. The magnetic loop is fare better than the whip antenna.
http://www.laud.no/la6nca/loop/

Multiband Deltaloop by DL2HCB
After a Qth change last year, I was fortunate to get permission for an outside antenna. The new antenna was built with the following considerations in mind: At least 10 - 20m coverage; Open wire feed to simplify matching ...
http://www.zerobeat.net/g3ycc/dl2hcb.htm

My Magnetic loop antenna by G4KKI
As I have very little room for outside antennas I now use a couple of home made magnetic loops which are situated in my roof space. With these I can operate on 80 - 10 mtrs, ...
http://homepage.ntlworld.com/g4kki.william/radio.html

New Magnetic Loop antenna for 20 - 10 meters by G4KKI
"Baby Zilla" as this new magnetic loop antenna has been nicknamed, is a 900mm octagon shaped loop made with 75mm aluminium tubing.
Baby Zilla is a smaller version of "Zilla" which Gary made from I think 85mm tube and I understand it was a 4ft octagon.
http://homepage.ntlworld.com/g4kki.william/new_magloop.htm

Packing Crate Antenna by SMØVPO
I have been placed in a situation where a landlord denied permission to erect an antenna. Any form of antenna was unreasonable, even a white-painted broom handle caused interference!!
http://www.sm0vpo.com/antennas/crate.htm

The Rockloop by W9SCH
W9SCH described this small loop in Sprat 60 and it has proved useful to the QRPer, ... It is basically a variant of the usual magnetic loop, using a toroid balun to get a reasonable match on the three bands.
http://www.zerobeat.net/g3ycc/rock.htm

W9SCH's Rockloop Antenna by DL1GSJ
Years ago I started experimenting on magnetic loops & Co; I like the idea of narrow resonant aerials. When I saw the rockloop I never believed it might work (Ohmic resistance of the wire).
http://www.qsl.net/dl1gsj/html/rockloop.html