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Portable Valve Transmitter, by Marconi Company, London, 1919

preview image for Portable Valve Transmitter, by Marconi Company, London, 1919
Inventory Number: 61008
Object Type:
Place Created: London United Kingdom (England) Europe
Accession Number: 2004-9/83
Brief Description: Portable Valve Transmitter, with single valve compartment, bakelite? aerial inductance (scale 0-180) and reaction coil (scale -90-+90) knobs, filament (scale OFF-3) and sliding resistance (out<-resistance->in) controls, Weston Ammeter (scale 0-10, 0-0.10), and 'Press 10 Amps' button. With earth and aerial nickel-plated terminals, hinged lid and two brass plaques on top surface; hinged lid on side. In teak case with removable front cover, circuit diagram pasted on interior of lid. Previously catalogued with Small Morse Key (Inv. Num. 71452).
Primary Inscriptions: "MARCONI'S WIRELESS / TELEGRAPH CO. LTD. / NO 133049 LONDON" printed on brass plaque upon upper exterior surface.
Provenance: Presented by the Marconi Corporation.
Collection Group: Marconi Collection
Material(s): Brass
Height Width Depth Diameter Unit
195 280 275 mm

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