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2m-70cm quadrifilar helical antennas
Build a pair of QHAs, one for 2 meter and one for 70 cm. A diplexer is of course needed to connect both to the single antenna connector of a dualband radio
post 11 Apr 2024
Helix Antennas Links →
Antenne helicoidale 2.4 GHz
2.4 GHz antenna design ideal for amateur satellite communications
Helix 2.425 GHz band
Broad bandwidth in the 2.425GHz band
circularly polarized antenna software
Software for calculator helix antenna
Detalles de diseo y construccion de una antena helicoidal
Here is a page with images of a 3-turn helicoid that was built for a reception system in the 1690 MHz band
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2.4 GHz antenna design ideal for amateur satellite communications
Broad bandwidth in the 2.425GHz band
Software for calculator helix antenna
Here is a page with images of a 3-turn helicoid that was built for a reception system in the 1690 MHz band
40m Compact 4-Square Antenna Compact 4-Square Antenna – EA5AVL The EA5AVL 40M Compact 4-Square Antenna was designed to provide excellent DX communications on the 40m band
The K9AY loop antenna for 160 and 80m bands You don't have the space to put up a 4 beverage antenna's, an ewe or a 4-square and want 'good ears' on 160 and 80m? no problems try a k9ay loop antenna
Spiderbeam 10-15-20m E' una Yagi tribanda full-size leggera, fatta di tubi in vetroresina e filo