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I came across this folding sieve recently and as soon as I saw it I knew I had to turn it into an antenna!
In the video I build a 14 turn helical antenna for 5.8GHz FPV but this could also be used as a reflector for many designs.
The helical calculator I used can be found here: jcoppens.com/an...
Here is a typical listing for the sieve on eBay: goo.gl/eeaJdf
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Email: andrewantennas@gmail.com