2m Retractable Yagi Antenna

prusaprinters

<p>This Yagi is my standard for Backpacking. I have seen many solutions for SOTA, but this one from OE6STD is very convincing:</p><ul><li>lightweight (230g)</li><li>small package size (21 x 37cm)</li><li>no assembly needed, just unfold and extend the boom</li><li>cheap and easy to source materials</li></ul><p>We also make these Yagis in our annually antenna workshops together with our newcomers in OE6.<br><br><i>UPDATE 24.Sept.2022:</i><br>- Corrected mistakes in the manual<br>- Fixed the Boom Mounts that had still bug that made the screwholes asymetrical<br>- Added OpenSCAD file for convenience</p><p><strong>Variants</strong></p><ul><li>Flanged SMA connector on boom with (RG-58/RG-316)</li><li>Cable clamp for coax tail (RG-58/RG-316)</li></ul><p><i>Note:</i> &nbsp;You have to be careful if you are using the RG-58 variant with a flanged SMA connector. The Cable is quite rigid and might rip off the connector if not treated carefully</p><p><strong>3D Printed Parts</strong></p><ul><li>1x Boom Mount for 16mm pipe</li><li>1x Boom Mount for 20mm pipe</li><li>1x Boom Mount for Dipole</li><li>1x Handle</li><li>1x Cable Clamp (depending on variant)&nbsp;</li><li>1x Measurement tape drill guide A&amp;B</li></ul><p><i>Important: Some pipes seem to vary in outer diameter a bit. Change “d_pipe” in OpenSCAD file accordingly if you got a bad batch.</i></p><p><i>If you don't want to use the paper templates:</i></p><ul><li>1x EN16/20 drill guide</li><li>1x EN25 drill guide</li></ul><p><strong>Other Parts</strong></p><ul><li>1x 300mm installation pipe EN16</li><li>1x 300mm installation pipe EN20</li><li>3x 100mm installation pipe EN25</li><li>6x M4x10mm cylinder head screws</li><li>9x M3x8mm cylinder head screws</li><li>6x M4 Washers</li><li>6x M4 Nuts</li><li>2x Cable shoes that can fit a M4 Screw</li><li>6x Zip ties (2,5mm x 100 or 3,5mm x 150)</li><li>~50cm RG58 or any thinner coax cable you have at hand</li><li>3m broad measurement tape (~2cm wide)</li><li>~15cm copper wire (1.5 or 2.5mm²)</li><li>Duct tape for drill guides</li></ul><p><strong>Tools</strong></p><ul><li>Drill (bench drill would be handy)</li><li>Saw (saw guide would be handy, you can use a dremel instead)</li><li>Clippers</li><li>Metal file</li><li>Soldering Iron</li><li>Hot glue (for flanged connector on boom variants)</li></ul><p><strong>Instruction</strong></p><p>The manual is provided as a PDF among the files.</p><p><strong>Source</strong></p><p>The 3D files are made by me, the antenna design comes from OE6STD. I have his approval to post and translate his files here. The original and more complex design can be found here: <a href="https://www.oevsv.at/funkbetrieb/ardf/technik/">https://www.oevsv.at/funkbetrieb/ardf/technik/</a></p><p>&nbsp;</p><p>&nbsp;</p>