435 MHz QFH Antenna for Amateur Radio Satellites.
One of the best antennas for Amateur Radio satellites is the Quadrifilar Helical Antenna (QFH). In this video, David Gilbert shows us the entire design and construction process, culminating in several successful satellite contacts. You can modify this design for other satellite uses, including weather and NASA satellites. If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=AMrPPIv-bcs. Thanks for joining us today. Aloha es 73 de Russ (KH6JRM). Here are some comments from David Gilbert: This video shows how and why I built a 435 MHz QFH antenna for ham radio satellites, including a few examples of the signals that I captured. The design parameters are derived from the online QFH antenna calculator at https://jcoppens.com/ant/qfh/calc.en.php The STL files for this model can be download free of charge from https://www.printables.com/model/1293... How this was made Auto-dubbed Audio tracks for some langu...