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Marconi Sykes Microphone, by Marconi Company, London, c. 1923

Inventory Number 79721

Acknowledgement: © History of Science Museum, University of Oxford, inv.79721

Item type
Object
Provenance
Presented by the Marconi Corporation.
Primary inscriptions
"MARCONI'S WIRELESS / TELEGRAPH CO LTD / No 303286 LONDON" printed on brass plaque upon exterior surface of cylinder side.
Other inscriptions
"NOTICE. / VARIOUS PARTS OF THIS INSTALLATION, & / METHODS OF WORKING, ARE COVERED / BY PATENT Nos. 160,228, 186,658, AND / PATENTS APPLIED FOR, AND ARE / PATENTED IN MANY COUNTRIES. / MARCONI'S WIRELESS TELEGRAPH CO. LTD. / LONDON" printed on large brass plaque upon exterior surface of cylinder side. "+ - / MAGNET / COIL" etched on red ebonite block upon exterior surface of cylinder side. "MOVING / COIL" etched on black ebonite block upon exterior surface of cylinder side.
Physical material
Iron
ebonite
brass
nickel.
Object type
Radio communication
Dimensions
Diameter: 166mm Height: 133mm Weight: 12.3kg
Inventory No
79721
Accession Number
2004-9/465

Description

Marconi Sykes Microphone, in japanned cylindrical iron casing with ebonite terminal blocks for magnet and moving coils (coloured red and black respectively). With lacquered brass terminals upon coil blocks. With nickel-plated base with seven screws and reveals wire sections of coil. Originally a component of Marconi Sykes Magneto Microphone Type MGI.

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