Crystal Radio Part 2
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Philips "200" Transistor Radio - Part 1
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Your First Crystal Radio
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Solid State Shortwave RF Preselector
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Crystal Radio Coil Sizing--Real Examples (4K)
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Variable inductor crystal set drives a speaker
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Seconde Guerre mondiale, RADIO DE L'AGENT MILORG - OLGA
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Spare The Rod? Spoil the Crystal Set - Part 1
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