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History of Science Museum

'Marconi' 1½KW Quenched Spark Gap Transmitter Type QG, by Marconi, London, c. 1920

Inventory Number 46329


Acknowledgement: © History of Science Museum, University of Oxford, inv.46329

Item type
Object
Provenance
Presented by the Marconi Corporation.
Primary inscriptions
"MARCONI'S WIRELESS TELEGRAPH / CO LTD LONDON" embossed upon cast nameplate. "'MARCONI' / TRANSMITTER / TYPE No. Q.G. P.S. No. 1434 E-INST. No. 356546" printed on metal plaque upon lower left-hand side front exterior surface. "NOTICE / VARIOUS PARTS OF THIS INSTALLATION / & METHOD OF WORKING ARE PATENTED / IN MANY COUNTRIES / MARCONI'S WIRELESS TELEGRAPH CO. LTD. / LONDON." printed on metal plaque upon lower right-hand side front exterior surface. "AMPERES / No. 356024 PAT. APP. FOR. / 'MARCONI'" printed on interior face of ammeter.
Object type
Radio communication
Dimensions
Height: 600mm Width: 490mm Depth: 750mm
Inventory No
46329
Accession Number
2004-9/591

Description

Marconi' 1½KW Quenched Spark Gap Transmitter Type QG, with eight-plated quenched spark gap, four flat copper-strip inductance coils with movable leads, glass-fronted half-moon ammeter (scale 0-15amperes), three-position adjuster switch, nickel-plated guard rail, porcelain insulators, and cast iron nameplate, all on mahogany baseboard.