Person
Allsop, Raymond Cottam (1898 - 1972)
OBE
- Born
- 11 March 1898
Sydney, New South Wales, Australia - Died
- 19 March 1972
Sydney, New South Wales, Australia - Occupation
- Inventor, Naval officer and Radio engineer
Summary
Raymond Cottam Allsop was an inventor and pioneer sound and radio engineer. He was involved with the experimentation and introduction of radio in Australia, experimental stereophonic sound systems, and a sound synchronisation system for movie projection that was successfully developed and used throughout Australia. Later in life he was a vocal advocate for the introduction of television.
Details
In the early 1920s he conducted experimental transmission work for 2BL in the lead up to their launch as Australia's first live radio station.
On his private station 2YL Allsop conducted bold experiments, such as the broadcast of the Big Ben live from London in 1927 and the charting of (Sir) Charles Kingsford Smith's historic flight in the Southern Cross in 1928.
In 1929, Allsop demonstrated his 'Raycophone' sound synchronisation system for movie theatres which, at a tenth of the price, beat the American competition out of the market and was installed in 375 cinemas across Australia.
During both World Wars Allsop served as a naval radio engineer, first as senior wireless telegraph operator in transports (1916-18) and then as Engineer Lieutenant (1940-43).
Chronology
- 1911
- Career event - Received experimental licence from the Wireless Institute of Australia
- 1913 - 1916
- Education - Apprentice at Shaw's Maritime Wireless Co.
- 1916 - 1918
- Military service - Senior wireless telegraph operator in transports, Naval Wireless Works
- 1923 - 1925
- Career position - Radio engineer, New Systems Telephones Pty Ltd
- 1925 - 1929
- Career position - Engineer-in-charge, New Systems Telephones Pty Ltd
- 1927
- Career event - Broadcast Big Ben live from London to Australian audiences for the first time on his private station 2YG
- 1928
- Career event - Charted the progress of Sir Charles Kingsford Smith's journey in the Southern Cross live to air on 2YG.
- 1929
- Career event - Demonstrated his invention, the sound synchronisation system Raycophone
- 1930
- Career event - Raycophone Ltd. was acquired by Harringtons Ltd.
- 1930 - 1945
- Career position - Director and Chief Engineer, Raycophone Ltd.
- 1932
- Career event - Foundation member, Institution of Radio Engineers, Australia
- 1933
- Career event - Harringtons Ltd. was acquired by Kodak Pty. Ltd.
- 1934
- Award - Fellow, Society of Motion Picture and Television Engineers, United States of America
- 1940
- Award - Fellow, Institution of Radio Engineers, Australia
- 1940 - 1941
- Military service - Engineer Lieutenant, Royal Australian Naval Volunteer Reserve, at the Anti-Submarine School, H.M.A.S. Rushcutter
- 1941 - 1943
- Military service - Engineer Lieutenant Commander, Royal Australian Naval Volunteer Reserve, at the Anti-Submarine School, H.M.A.S. Rushcutter
- 1945
- Life event - Retirement from Raycophone
- 1945 - 1957
- Career position - Private consultant in radio engineering
- 1946
- Award - Member, American Institution of Radio Engineers
- 1947
- Award - Member, British Institution of Radio Engineers
- 1953 - 1954
- Career position - Member, Australian Broadcasting Control Board
- 1971
- Award - Officer of the Order of the British Empire (OBE) - in recognition of service to the development of radio.
Related entries
Published resources
Book Sections
- Brazier, Jan, 'Allsop, Raymond Cottam (1898-1972), radio pioneer and engineer' in Australian dictionary of biography, volume 13: 1940 - 1980 A-De, John Ritchie, ed. (Melbourne: Melbourne University Press, 1993), pp. 38-39. http://adb.anu.edu.au/biography/allsop-raymond-cottam-ray-9344. Details
Resources
- Wikidata, http://www.wikidata.org/entity/Q21537237. Details
- CA 38, Navy Office [IV], Department of the Navy [II]; CA 46, Department of Defence [III], Central Office, 'NAA: A6769, ALLSOP R C', A6769 Service Cards for Navy Officers, 1911-1970, National Archives of Australia, RecordSearch, https://RecordSearch.naa.gov.au/scripts/AutoSearch.asp?O=I&Number=4439699. Details
- IP Australia, Commonwealth of Australia, 'Application: 5205/1936. Title: Variable-density push-pull sound-on-film recording and reproduction', Australian Patent search database, Commonwealth of Australia, 2015, https://ipsearch.ipaustralia.gov.au/patents/1936005205. Details
- 'Allsop, Raymond Cottam (18980311-19720319)', Trove, National Library of Australia, 2009, https://nla.gov.au/nla.party-1468517. Details
Rebecca Rigby; Ken McInnes
Created: 31 January 2012, Last modified: 12 March 2025