Ring Variometer Crystal Radio
thingiverse
Create a crystal radio with a half ferrite ring to tune the frequency instead of a variable capacitor which is hard to find. Check out my blog for detail instructions of how to download the 3D models to print out the parts, and where to order the parts. http://billydiy.blogspot.com/2020/10/designed-ring-variometer-crystal-radio.html Checkout my 3 part video series of the project to create a Ring Variometer Crystal radio Part 1 Introduction and demo - https://youtu.be/tg6rbDvBY94 Part 2 The 3D design - https://youtu.be/P5OaoGvIErU Part 3 How to make it - https://youtu.be/u2V1u8saGVo
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