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'Marconi' Auto-Alarm Receiver Type 332, by Marconi Company, London, c. 1920

Inventory Number 41271

Acknowledgement: © History of Science Museum, University of Oxford, inv.41271

Item type
Object
Provenance
Presented by the Marconi Corporation.
Primary inscriptions
"'MARCONI' / AUTO ALARM RECEIVER / TYPE 332 P.S. NO 2684 A / INST NO. 350439 / MARCONI'S WIRELESS TELEGRAPH CO. LTD. LONDON" on metal plaque on side.
Object type
Radio communication
Dimensions
Height: 318mm Width: 265mm Depth: 170mm Weight: 6.3kg
Inventory No
41271
Accession Number
2004-9/19

Description

Marconi' Auto-Alarm Receiver Type 332, for use with 'Marconi' Auto-Alarm, with numerous different sockets and terminals on ebonite base in teak case. Includes Bakelite? sockets for two D.E.R. valves and one D.E.7 valve; five nickelled terminals for earphones (marked "TELEPHONES"); five nickelled nodes; celluloid? plaque (marked "BEST ADJUSTMENTS / VARIO / A.T.I. / REACTION") and glass display D.C. galvanometer. Five nickelled nodes are: "FILAMENTS" (scale 0-8), "RELAY CURRENT" (scale 0-6), "VARIOMETER" (scale 0-10), "ATI" (scale 1-5), and "REACTION" (scale 0-10). D.C. galvanometer is marked "PAT. NOV.6, '88.APR.29,'90. FEB 17,'91.OCT.4,'98.JULY 16,'01. / D.C. GALVANOMETER / MODEL 375 NO. 17313" with scale -30 to 0 to 30. Previously catalogued and associated with 'Marconi' Auto-Alarm Selector Type 333 (Inv. Num. 22770), 'Marconi' Auto-Alarm Buzzer Type 225 (Inv. Num. 34759), 'Marconi' Auto-Alarm Bell Type 117 (Inv. Num. 14147), 'Marconi' Auto-Alarm Morse Key Type 316A (Inv. Num. 82360).

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