Saturday, June 17, 2017

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.

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http://hawaiisciencedigest.com (science and technology news for radio amateurs).
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https://paper.li/f-1482109921 (My daily intelligence briefing).

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Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM)