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Showing posts with the label Portable 20 Meter Rotatable Dipole.

Portable 20 Meter Rotatable Dipole. Post #1163.

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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 for radio a