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ADSB quarter wave ground plane antenna crown
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Helper for building a 8 radial quarter wave ground plane ("spider") antenna.
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Model information
- Source
- Printables
- Category
- Electronics
- License
- Creative Commons — Attribution — Noncommercial
The vertical monopole is 60mm.
The radial length is 69mm from the crown to the tip, and has a downward angle of 45 degrees.
The crown slides over the cable and helps uniformly position the radials and also hold them in place afterwards.
The cable used for the antenna is RG59 but the crown can be adapted to whatever you have lying around.
Also, the number of radials is customizable. Default is 8.