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by pokey00 956 days ago
Why cut it in half? Spray (or Mylar) on the outside.
2 comments
wtallis 956 days ago
A parabola isn't the same shape as a hemisphere. (Although, I'm not convinced the antenna under discussion actually is a parabola and not a catenary, or something in between.)
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djcannabiz 956 days ago
Some other comments posted a diagram-the actual reflector is inside the balloon. the balloon is there to keep the reflector in the right shape.
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