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QRP dipole antenna for ham radio, or short wave listening

Compact QRP Dipole Antenna Center and End Insulators, Amateur Radio or Shortwave
101
534
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3624
updated September 12, 2025

Description

PDF

All components to print a center insulator, end insulators, and line tensioners to build a QRP dipole antenna for ham radio. I designed this for use with 6-32 screws, 18 gauge wire, SO-239 connector and 550 parachute cord. The antenna works well for temporary antenna applications. It can be mounted on a pole (the mast diameter socket is .73") or hung from a tree or structure. The antenna parts print well with PLA or nylon except the gasket which is best printed in TPU. I added an optional cap file to give the option of not using countersunk screws. Added 3 STL files to print spacers of different thickness to give more room for wiring if desired.

Note, user GuyO created a very useful adapter to allow this insulator to the attached to (3/4") NEMA electrical conduit. Link below.

https://www.printables.com/model/692598-dipole-antenna-pole-adapter/related

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The author marked this model as their own original creation.

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