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.
Modified radio with soviet made germanium diode →    • I got Soviet made germanium diode and...  
Foxhole Radio wiki ↓
https://en.wikipedia.org/wiki/Foxhole...
Twitter:   / ichiken_make  

★ Equipment used (including amazon associate link)
Crystal earphone https://amzn.to/3ftxsue
Timber
Copper wire (enamel wire) 0.5mm, about 20m Obtained at home centers
Obtained at home centers, etc., about 20 cm of solid copper wire
pencil
Cutter blade
Wood screw

★ Playlist
Raspberry Pi https://www.youtube.com/playlist?list...
Electronic work https://www.youtube.com/playlist?list...
Electrical explanation https://www.youtube.com/playlist?list...

music: Kevin MacLeod, The Big Beat 80's.

■Business inquiries
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  / ichiken_make