![Amazon.com: United Nuclear The Ultimate Crystal Radio Kit Authentic Cat's Whisker Diode - Vintage Crystal Radio Circuit Craftsman Radio Kit : Electronics Amazon.com: United Nuclear The Ultimate Crystal Radio Kit Authentic Cat's Whisker Diode - Vintage Crystal Radio Circuit Craftsman Radio Kit : Electronics](https://m.media-amazon.com/images/I/51bZ4cubHLL._AC_UF894,1000_QL80_.jpg)
Amazon.com: United Nuclear The Ultimate Crystal Radio Kit Authentic Cat's Whisker Diode - Vintage Crystal Radio Circuit Craftsman Radio Kit : Electronics
Archimedes Laboratory - 'McGyver' Fox Hole Radio During WWI, WWII and later conflicts, many GI's built “Fox Hole Radios” to listen to news and music. These radios did not require batteries –
![Amazon.com: Hot Rodding the Fox Hole Radio (Foxhole Homestead Book 19) eBook : Holliday, Blake: Books Amazon.com: Hot Rodding the Fox Hole Radio (Foxhole Homestead Book 19) eBook : Holliday, Blake: Books](https://m.media-amazon.com/images/I/410jiwKvWeL.jpg)