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Internet Archive: The Radio Amateurs Hand Book (and more)

Here is a link to Frederick Collins' 1922 version of The Radio Amateurs Hand Book. Neat.

Addendum: Radio telephony for amateurs also appears pretty cool. It was published in 1922, and includes a circuit for a regenerative receiver, which I recall was invented only around 1917.

Addendum2: Can you tell I'm on a crystal radio kick today? Radio phone receiving: a practical book for everybody also looks like it could be nice.

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