quad band antennas

Multiband Cubical Quads - EI7BA Multiband Cubical Quads projects, includes two elements quad antennas for 10 12 15 17 20 meters band. Performance considerations, detailed pictures and construction notes.

KG6ENA L7 HamLoop - A Quad Loop antenna for 17 meter band

Two portable antennas for 6-meter - VE7CA reprint an interesting article taken from arrl antenna compendium. Two elegant practical and portable 6-meter gain antennas, a two-element quad and a tree-element Yagi antenna for 50 Mhz-6 meter band

An intro to OWA Quad's Priority listing - An introduction to OWA (Optimised wideband array) 50Ohm direct feed Quad beam antennas

Quad antenna for 70 cm - Quad antennas for 70 cm band, suitable for station or repeater application

F6ITS ham blog - F6ITS ham blog with detailed description of quad antennas for 432, 144 and 28MHz band

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

Giovannini Elettromeccanica - Quad, Yagi for low bands. Specialist in antennas, supports and moving of medium-large sized radio antennas, professional rotators, masts, towers, and accessories.

KVK Antenna Systems - The manufacturer of the NuBeam, Vipole, and the multi-band Quad-Folded-Dipole (or QFD for short) antenna. Also have a unique multiband vertical which can combine operation on multiple HF frequencies as well as provide high gain on 50, 144 and 438MHz in a single antenna.

Master Beam Antenna System - MasterBeam antennas, ham radio antenna manufactures produces monoband yagi antennas for HF VHF, HF Quad antennas and vertical antennas based in italy

PKW Antennas - PKW Antennas for ham radio bands, Quads, delta loops, log periodics antennas for military and professional use by Ditta Martelli fabbrica italiana antenne

Degen Design - Multi band mini quad antennas, log periodic and stacked antenna for 144 MHz and 70cm

T.G.M. Communications - MQ-1 four band HF beams 20,15,10,6 meters MQ-2 six band HF beams 20,17,15,12,10,6 meters, beam antennas and Hybrid Quad antennas