'MPB' call sign plaque, 1900-1950

'MPB' call sign plaque, 1900-1950 'MPB' call sign plaque, 1900-1950 One call sign, 'MPB' on wooden plaque

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On loan from the Museum of the History of Science|Enquiries to Science Museum, London

On loan from the Museum of the History of Science|Enquiries to Science Museum, London

One call sign, 'MPB' on wooden plaque
On loan from the Museum of the History of Science|Enquiries to Science Museum, London

One call sign, 'MPB' on wooden plaque, probably made by Marconi's Wireless Telegraph Company Limited, Chelmsford, Essex, England, 1900-1950.

Marconi's Wireless Telegraph Company had the monopoly on the commercial side of wireless telegraphy from its early days, and eventually the Naval side as well. Every ship carrying Marconi equipment or officers had a call sign beginning with 'M'. Call signs are unique identifying codes for use over telegraphy and radio. In 1912, 'MPB' was the call sign of the 'Empress of Britain', a transatlantic liner that travelled between Britain and Canada.

Details

Category:
Radio Communication
Object Number:
1962-191 Pt1
Materials:
wood (unidentified) and paint
Measurements:
overall: 80 mm x 195 mm x 15 mm, .1408 kg
type:
plaque
credit:
Lent by the Museum of the History of Science