Image / Water-cooled microphone

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Title: Water-cooled microphone
Creator: Herrold, Charles David 'Doc
Date Created and/or Issued: 1909-1914
Contributing Institution: History San Jose Research Library
Collection: History San Jose Online Catalog
Rights Information: Please contact the contributing institution for more information regarding the copyright status of this object.
Description: Water-cooled microphone. Belonged to (and invented by) Charles Herrold who used it for many years on the radio. Silver-cooled metal on wood base. Originally part of the National Radio Arc Transmitter used and tested by Herrold.
Type: image
Identifier: 9E349BA0-E2D4-4983-BFF9-057559561729
1976-169
Subject: KQW (Radio station: San Jose, Calif.)
Inventions
National Radio Company (San Francisco, Calif.)
Radio broadcasting (LCSH)
Microphones
Nineteen hundreds (Decade)
Herrold, Charles

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