Portable 1/4-Wave Ground Plane Antenna for Airband
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A lightweight, foldable 1/4-wave ground plane antenna designed for airband reception (108–137 MHz).
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- Printables
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- Electronics
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- Creative Commons — Attribution — Noncommercial — Share Alike
This 3D-printable antenna hub and accessory set lets you build a cost-effective, portable quarter-wave ground plane antenna ideal for airband listening. The central hub houses a BNC connector and supports the monopole and radial elements, while printed plugs, hinges, and spacers make assembly and transport simple and reliable. The design is optimized for outdoor use — parts are easy to print in PETG for UV and weather resistance, and the geometry provides stable mechanical support. Radials and the vertical element are constructed from standard PVC conduit, with stranded wire soldered to a ground plate for electrical connections.
For full build details, dimensions, print settings, and performance notes, visit the complete guide at Motley Science:
https://motleyscience.com/2026/01/31/very-cheap-portable-1-4-wave-ground-plane-antenna-for-the-airband/