Portable 20 Meter Rotatable Dipole. Post #1163.
If you can't view this video, please enter this title URL into your browser search box: https://www.youtube.com/watch?v=8ijIICTN391. Helically-wound antennas can be a lot of fun to design, build, and use. In this video, Bob (KC4FNE) shows us his home-brew 20 meter rotatable dipole antenna during a presentation before the Virginia Tech Amateur Radio Association meeting on 05 February 2014. The only drawback to these helically-wound antennas is a fairly narrow bandwidth. I've built a few vertical helix antennas for 40 and 80 meters where vertical space was limited. All of them performed well, given the narrow bandwidths inherent in the design. In Bob's design, a ground radial or counterpoise system is not required for operation. For the latest Amateur Radio news and information, please visit these websites: http://www.HawaiiARRL.info. https://oahuarrlnews.wordpress.com. https://bigislandarrlnews.wordpress.com. http://www.kh6jrm.info (breaking news...