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Mini Horse Yagi — image 1
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Mini Horse Yagi

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Relatively compact and lightweight 3 element Yagi antenna. Less than $20 to build

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Model information

Category
Electronics
License
Creative Commons — Public Domain

  Based on dimensions from this video:    Works great and is compact given its specs, I built mine using exact measuremeants from the video and it worked with no tuning, under 2:1 SWR on the 6m band.    This design should scale to other bands, there are some tables out there with measurements, however tuning could be annoying. 

I used orange 4 foot driveway markers from a big box store for the 4 diagonals and 5/8 wood dowels for the driver support and designed this center for 1" PVC.   However, it is pretty easy to modify the design in onshape, bambu poles or cheap wooden dowels would also work, arms are just slip fit since the antenna itself holds them in.  Center hole diameter also easily scales up for whatever mast you've got.  I used a goozeezoo 2kw 1:1 balun and some 18 ga wire I had laying around. 

I printed in ABS in about 2.5 hours.   Please don't use PLA outside. 

2.05m x 1.2m outside dimensions, total wire 8.64 m when adding 1cm for solder joints.  I used fishing line to tension the 1.2m sides, and electrical tape same as the youtube video. 

https://cad.onshape.com/documents/cdc498a0708852adefb15157/w/bb5b4bbebfd8a6eb5520e67a/e/8129967b30d2375e2e3da7eb?renderMode=0&uiState=6a2ffe087e79d079baaa6a15

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