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New top story on Hacker News: How to Make a Crystal Radio – No Batteries, No External Power (2015) [video]

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New top story on Hacker News: How to Make a Crystal Radio – No Batteries, No External Power (2015) [video] New top story on Hacker News: How to Make a Crystal Radio – No Batteries, No External Power (2015) [video] Reviewed by Qamar javed on December 31, 2018 Rating: 5

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