MORSE KEYS
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.
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Name or Model No. |
Approx. Date |
Description |
Prime application |
Details |
Comments |
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1902 / 1905 |
Morse Key |
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here |
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Early 1900s |
Spark Key |
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here |
As used on R.M.S. Titanic |
SE86 |
c.1914 |
Spark Key |
Submarines |
here |
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316A |
c. 1920 |
Auto Alarm Key |
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here |
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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 |
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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 |
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365B |
Early 1940s |
Morse Code Key |
Marine |
here |
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365C |
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Morse Code Key |
Marine |
here |
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365D |
Early 1940s |
Morse Code Key |
Marine |
here |
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365EZ |
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Transmitting Key |
Marine |
here |
May have been made by Eddystone |
S689 |
1948 |
'Bug' Key |
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here |
Made by Eddystone |
1588 |
Mid 1950s |
Telegraph Key |
Air |
here |
Used with Marconi AD107 aircraft transmitter |
971 |
1950/1960s |
Key |
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here |
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Z50 |
1980s |
Key |
Marine |
here |
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