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Choke/balun case for center fed dipole antenna — image 1
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Choke/balun case for center fed dipole antenna

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I really liked the Dipole / Inverted V Balun Antenna Centerpiece from kaliway, but it was a bit of an overkill for a…

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Model information

License
Creative Commons — Attribution

I really liked the Dipole / Inverted V Balun Antenna Centerpiece from kaliway, but it was a bit of an overkill for a FT140-43, so here's a redesign.

Features:

  • smaller, thinner and more compact (should be less than 5-6 hours to print)
  • thinner thread for the lid
  • center mount to secure the ferrite core, with 3 holes for zip ties
  • M4 screws for the dipole wire
  • SO-239 connector
  • reinforced holes for the screws
  • more holes in the lateral arms for extra reinforcement or a dual/multi-band dipole
    Due to the smaller size and restricted space, you might want to use a bifilar winding instead of the traditional "coax over ferrite" wrapping.

    Can be printed with no supports.

Print instructions

Balun winding

Please see this great tutorial about how to wrap the toroid: https://www.hfkits.com/manual-for-11-balun-150-watt-for-dipole-antennas/

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