h1. Antennas

h2. Quadrifilar Helix (QFH) Antennas

* "Helical Quad Antenna for Weather Satellites":http://www.alternet.us.com/?p=1461
* "A QFH antenna for the weather satellite band":http://www.g4ilo.com/qfh.html
* "QFH sizing calculator (online)":http://jcoppens.com/ant/qfh/calc.en.php