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Record Details

Short Distance Wireless Telephone Set Type TT2, by Marconi Company, London, c. 1920

Inventory Number: 46879
Object Type:
Place Created: London England United Kingdom Europe
Accession Number: 2004-9/597
Brief Description: Short Distance Wireless Telephone Set Type TT2, with ebonite vertical front panel in teak case. With three DEV valves, potentiometer sliding condenser (scale 0-6), Vulcan glass-fronted halfmoon ammeter (scale 0-500milliamperes), and assorted bakelite controls: aerial tuning dial (scale 0-180), receiver reaction coil (scale -90,0,90), transmitter reaction coil sliding control, aerial coupling coil sliding control, send/receive switch, all upon front vertical ebonite panel. With seven lacquered brass terminals (five marked for power, two marked "MICROPHONE"), large Post Office-type glass bulb valve with red bakelite apron, and unmarked sliding control upon upper exterior surface of case. With lacquered brass aerial and earth terminals upon left-hand side of case exterior surface, and dual lacquered brass telephone terminals upon right-hand side of case exterior surface. With detached lacquered brass terminal. With associated photocopied article.
Primary Inscriptions: "MARCONI'S WIRELESS / TELEGRAPH CO. LTD. / No175707 LONDON" etched on exterior surface of front vertical panel. "MILLIAMPERES / VULCAN" printed on interior of ammeter face.
Provenance: Presented by the Marconi Corporation.
Collection Group: Marconi Collection
Material(s): Teak
ebonite
bakelite
glass
brass
assorted metals.
Dimensions:
Height Width Depth Diameter Unit
530 220 320 mm

Narratives

Image with multimedia irn 37635Image with multimedia irn 37636

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