bi square

Coax Square antenna - N0KHQ Moxon rectangle for 17 meters, constructed from RG-58 coaxial cable

W7AV 40 Meter Half Square - These antennas offer big gun DX performance on the low bands, yet they are surprisingly simple to build. Try one- you will like it!

Multi-Band Super Mini Loop Antenna  ^pop - How to make the Super antenna. To build this antenna you need a lot that is at least 100 feet across. Antenna covers all bands 80-10 meters + 30, 17, 12 meter WARC Bands This antenna works as a Full Wave Loop on 80 Meters and also works as a 2 wavelength open loop or Bi-Square on the 40 Meter band

Length of a Resonant Square Quad Loop - Calculating the length of a resonant square quad loop

Receive 4 square antenna - N6RK receive 4 square antenna with transformer coupled antennas and true hibrid combiner

Low-noise receiving antenna for 80 and 160 m - How you can make a low-cost, low-noise, 21-foot-square receiving antenna that boost your DX ability.

Curtain Antennas - Lazy H Antenna, Bi-Square, Sterba Curtain, HR, HRS, and USIA Curtain Antenna Arrays at W8JI

GB Antennas and Towers - Dutch Antenna and Tower Manufacturers from Slimline Square Triangular Round Towers. Antennas production include Yagi Monoband/Dipole/HF Quad /50MHz and 70MHz Yagi-Quad, VHF-UHF yagi-Quad and Comby antennas VHF/UHF/SHF

Eurowinlog - Eurowinlog is a ham logging software using worldmap zoomable capabilities. Handling 32400 gridsquares, dxcc, dxcluster, qsl printing and much more.