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Rare de Forest Audion Donated to ARRL, Mated with Vintage Radio for Museum Display

ARRL

Well-Known Member
Nov 15, 2008
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An ARRL member from Virginia has donated a rare de Forest “round bulb” Audion to the League, which has paired the groundbreaking triode with a de Forest Receiver of similar vintage and rarity. Walt Bain, W4LTU, recently wrote ARRL Headquarters to see if the League would give the antique tube a home. Radio pioneer Lee de Forest filed his first patent for the Audion in 1907, describing it as a de...

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