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Here's a simple device you can use to measure antenna elements for both home and portable use. You can take this step a bit further by using a metal (usually steel) tape measure to make antenna elements. Just cut the metal tape measure to the required length using the usual dipole antenna formula. I've seen 2 m and 70 cm yagi beams made from metal tape measures. They work well for RDF (radio direction finding) "fox hunts", as well as for portable or emergency antennas. In most cases, your neighborhood building supply or electrical supply outlet can offer many items suitable for antenna use. This video explains how a simple tape measure can make antenna design and construction a bit easier.
For the latest Amateur Radio news and information, please visit these websites:
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday).
http://amateurradionewsinformation.com (Amateur Radio News & Information).
Other sites of interest:
http://hawaiisciencedigest.com (Hawaii Science Digest)
https://hawaiiintelligencedigest.com (Hawaii Intelligence Digest)
https://paper.li/f-1482109921 (Hawaii Intelligence Daily)
https://prgnewshawaii.wordpress.com (Hawaii News Digest)
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Opinions expressed in this blog are mine unless otherwise stated.
Thanks for joining us today.
Aloha es 73 de Russ (KH6JRM).