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Transistor Radio Repair: Logical Fault Finding

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Philips Factory Thirties

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Crystal Radios: No Batteries? No Problem!

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20 Gadgets From The 1970s That Were AHEAD of Their Time!

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WWII RADIO OPERATOR VACUUM TUBE TRAINING FILM 77564

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The First Transistors

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The Transistor: a 1953 documentary, anticipating its coming impact on technology

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make a simple AM radio , receives all international radio stations