This comes from Alex’s Github pages where there are many excellent tutorials on many aspects of using this and other antennas – highly recommended. A copy is supplied here, wirh Alex’s permission, for the convenience of observers.
Download build instructions below:
https://www.astronomy.me.uk/wp-content/uploads/2026/07/6a9215fc-f3ee-4d81-81d2-6e5dbbdd72cd.pdf
Access Alex’s Github page here:
https://github.com/AP-HLine-3D/HLine3D