Project E.L.F. - The history of communicating with submarines underwater - #HamRadioQA
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Why don't Submarines use Radio or GPS?
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Window screen antenna ground network- I can't believe what this does! #hamradioqa
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Russian Woodpecker - The Radio Signal That Wreaked Havoc Around The World
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Submarine Secrets: Pump Jets And Propellers Explained
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Why America's Forgotten Microwave Skyway Network is still standing | Abandoned
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How Sonar Works (Submarine Shadow Zone) - Smarter Every Day 249
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Natural Radio From Lightning Sounds INCREDIBLE- VLF Radio
14:21