Collapsible Yagi Antenna

Inspired by Balua's brilliant design https://www.thingiverse.com/thing:268091 but different solution: Just roll the tape in and out of the 3D-printed spools. This way the tapes do not have to be cut and bared in the middle (no corrosion risk).

By collapsing the tapes into the spools (starting at the outmost director) you can reduce the directivity of the antenna (and its gain) without disassembling anything. Build a highly directing antenna (with many directors) and choose the effective directivity in the field.

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Update 26 September 2022:

I added a rotatable and tiltable antenna holder to mount the Yagi on top of a 25 mm pole.

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I added .stl files for a square 20 mm wide boom, 16 mm (flat-pressed) measuring tape and 1, 3 and 5 screws plus a bracket for a vertical PCB soldering type SMA connector.

If you are using a different boom