• If you are citizen of an European Union member nation, you may not use this service unless you are at least 16 years old.

  • Social distancing? Try a better way to work remotely on your online files. Dokkio, a new product from PBworks, can help your team find, organize, and collaborate on your Drive, Gmail, Dropbox, Box, and Slack files. Sign up for free.


Supporting equipment

Page history last edited by David Samways 6 years, 4 months ago








Since the early 1900s, when wireless was in its infancy, there was need to provide a mechanism to 'interrupt' the carrier generated by the, then, spark transmitter.  Initially this was used as a telegraph system for communication and later the code, developed by Samuel Morse, became the de facto standard.


Records show that such telegraph keys were made by the company until the mid 1980s.


A useful paper describing the Development and History of the Morse Key is available here.



Name or Model No. Approx. Date Description Prime application Details Comments
  1902 / 1905 Morse Key   here  
  Early 1900s Spark Key   here As used on R.M.S. Titanic
SE86 c.1914 Spark Key Submarines here  
316A c. 1920 Auto Alarm Key   here  
AS300A Early 1920s Coastal Station Key Marine on-shore here Contracted by Trinity House, London.  Also used on Marconi SWB1 transmitters
PS213A 1926 Coastal Station Key Marine on-shore here  
PS5785A 1930s Air Ministry Morse Key RAF here Air Ministry: 10F/94
D Type c. 1930 Telegraph Key RAF here Air Ministry: 10F/7373
B Type Early 1930s Telegraph Key RAF and Navy here Air Ministry: 10F/7839
365A Early 1930s Morse Code Key Marine here  
365B Early 1940s Morse Code Key Marine here  
365C   Morse Code Key Marine here  
365D Early 1940s Morse Code Key Marine here  
365EZ   Transmitting Key Marine here May have been made by Eddystone
S689 1948 'Bug' Key   here Made by Eddystone
1588 Mid 1950s Telegraph Key Air here Used with Marconi AD107 aircraft  transmitter
971 1950/1960s Key   here  
Z50 1980s Key Marine here  







Comments (0)

You don't have permission to comment on this page.