Amplifier And Detector Type 55A With Headphones, by Marconi Company, London, c. 1920 | |||||||||||
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| Inventory Number: | 18067 | ||||||||||
| Object Type: | | ||||||||||
| Place Created: | London England United Kingdom Europe |
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| Accession Number: | 2004-9/81 | ||||||||||
| Brief Description: | Amplifier and Detector Type 55A With Headphones, with seven 'Marconi' V24 valves, two sliding potentiometers, numerous terminals, dovetailed teak frame and japanned steel case. Thirteen copper alloy terminals marked "6 VOLTS + -", "H.T. VOLTS + -", "120 Ohms TELEPHONES", "E", "F", and "G". With earphones. This amplifier and detector formed part of a Marconi No.6 direction finding station. It was used along with a radiogoniometer, tuning condenser, transformer, battery and wavemeter. | ||||||||||
| Primary Inscriptions: | "M.W.T. CO. LTD. LONDON / AMPLIFIER NO 181868 / TYPE NO 55 A / NO OF VALVES 7 / WAVE RANGE 600 - 5000m / H.T. VOLTS 50" on plastic plaque on interior of teak frame. | ||||||||||
| Provenance: | Presented by the Marconi Corporation. | ||||||||||
| Collection Group: | Marconi Collection | ||||||||||
| Material(s): |
Wood (Teak) Steel Copper Alloy Fabric Glass Metal Ebonite Rubber Plastic | ||||||||||
| Dimensions: |
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There are no associated narratives. | |||||||||||
Permalink: http://www.mhs.ox.ac.uk/object/inv/18067