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CARBON PUBLIC ADDRESS MICROPHONE IN FRAME, 1930's

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CARBON PUBLIC ADDRESS MICROPHONE IN FRAME, 1930's

Carbon Microphone for Public Address applications, fitted into a box with an on/off switch. Also in the box is a transformer to change the impedance of the device from low to standard 300ohm balanced line, a battery is required to drive the unit, which is wired to the input of the transformer and there is a space in the box for this.

"Reisz" type microphone

Nortel Collection

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A1324



2007 The Museum of Technology, The Great War and WWII
Company registered in England No. 7452160, Registered Charity No. 1140352, Accredited Museum No. 2221