Crystal Radios: No Batteries? No Problem!
25:06
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Crystal Radios: No Batteries? No Problem!
(To those who swear I've covered this topic before: I have; I just wasn't satisfied with my original video) Remarkably simple and requiring no power source, crystal radios were the primary means of listening to commercial radio broadcasts until the late 1920s and early 1930s, when they were largely superseded by more sensitive tube-based ...
489.5K viewsMar 6, 2024
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