Making a Foxhole radio Very primitive

I made my own Foxhole Radio, the most primitive radio receiver. You can hear AM radio sound even without power. <br>Modified radio with soviet made germanium diode → https://youtu.be/49fr1Vgy_bg <br>Foxhole Radio wiki ↓ <br>https://en.wikipedia.org/wiki/Foxhole... <br>Twitter: https://twitter.com/ichiken_make <br> <br>★ Equipment used (including amazon associate link) <br>Crystal earphone https://amzn.to/3ftxsue <br>Timber <br>Copper wire (enamel wire) 0.5mm, about 20m Obtained at home centers <br>Obtained at home centers, etc., about 20 cm of solid copper wire <br>pencil <br>Cutter blade <br>Wood screw <br> <br>★ Playlist <br>Raspberry Pi https://www.youtube.com/playlist?list... <br>Electronic work https://www.youtube.com/playlist?list... <br>Electrical explanation https://www.youtube.com/playlist?list... <br> <br>★ Business inquiries: [email protected] <br>★ Click here for channel registration https://www.youtube.com/channel/UCGhu... <br> <br>music: Kevin MacLeod, The Big Beat 80's.