RF tutorials - Understanding and building a Variometer

In this video I look at a not so common variable inductor - the variometer. I look at how the device works and then I try to build one using a 3d printer and some wires. In the end it does work but it has limitations.

References and further reading: http://g3ynh.info/comps/Vari_L.html

3Dfiles available on: https://www.thingiverse.com/thing:4730862

Special Thanks to all my supporters on Patreon! Especially @afiskon and Ralf B.!

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