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History of Science Museum

Tuned Field Transmitter, by Marconi Company, English, 1907

Inventory Number 87142


Acknowledgement: © History of Science Museum, University of Oxford, inv.87142

Item type
Object
Provenance
Presented by the Marconi Corporation.
Primary inscriptions
None
Object type
Radio communication
Dimensions
Height: 265mm Width: 425mm Depth: 509mm
Inventory No
87142
Accession Number
2004-9/118

Description

Tuned Field Transmitter, with copper alloy spark gap and tuned circuit on mahogany and ebonite flat case containing sixteen (of eighteen) horizontal Leyden jars. It was tuned by a bank of Leyden-jar capacitors and was driven by an induction coil on which the Morse key was mounted. Previously catalogued with Induction Coil (Inv. Num. 30667).

This was one of the first portable wireless transmitters for use by the Army. It was tuned by a bank Leiden-jar capacitors and was driven by an induction coil on which the Morse was mounted.