Tiny Portable EFHW Antenna
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Tiny Portable EFHW Antenna for bands 40m/20m/15m. It integrates thin coax cable, UNUN and wire in compact winder form.
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Updated at source:
Model information
- Source
- Printables
- Category
- Outdoor Sports
- License
- GNU General Public License v3.0
The proposed solution is antenna winder which integrates UNUN in the center and
contains two compartments, in first one thin coax cable such as RG174/U of
length 2.5m and ended with BNC connector is wound, while in the second one
the thin wire of length 20.2m (some adjustment may be needed) is wound.
Works fine for 40m, 20m and reasonably for 15m band. With wire link at 15.12m works also on 30m band.
You will need to print 3 parts, assembly UNUN (unbalanced-unbalanced transformer) and add 20.2m thin insulated wire. Detailed instructions in Tiny_Portable_EFHW_antenna.pdf or visit http://om2ju.com
OpenScad source file is provided too, feel free to experiment with modifications. If you decide to publish the results please leave the original header in the source file.
