Grace's Guide

British Industrial History

Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 134,691 pages of information and 213,769 images on early companies, their products and the people who designed and built them.

Duncan Sinclair

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Duncan Sinclair

1890 Born in London

Educated at Aske's Hatchham and King's College, University of London, and abroad.

1915 Entered Royal Flying Corps as wireless officer

1916-18 Served in France

1918 Instructor at R.A.F. Electrical and Wireless School.

1919 Served in Russia.

Mentioned in despatches and awarded Order of St. Stanislaus.

1920 Appointed to Signals Branch. Air Ministry

In charge of Civil Aviation Signalling under Group Captain Blandy, C.B., D.S.O., the head of the Branch.

1920 Appointed to Controllerate of Communications, Air Ministry. To date has been actively engaged upon air route signals organisation, and commercial aeroplane, seaplane, flying boat and airship wireless.

Author of papers on "Signalling on our Airways," "Airship Wireless in 1921," "The Applications of Wireless to Commercial Flying," "The Wireless Stations of the British Air Routes," etc.

Member of American Institute of Radio Engineers, and Radio Society of Great Britain


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