[GreenKeys] TTY on ocean cables?

[Brenda Gentry]

The mention of Navy RTTY  and water brought out a question-  when was 
the first transatlantic teletype cable system built?   What kind of 
keying did it use?

      B. Gentry,  KA2IVY

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>>>> Jordan Spencer Cunningham's GreenKeys Search Tool: https://teletype.net/gksearch
>>>> 2002-to-present greenkeys archive: http://mailman.qth.net/pipermail/greenkeys/
>>>> 1998-to-2001 greenkeys archive: http://mailman.qth.net/archive/greenkeys/greenkeys.html
>>>> Randy Guttery's 2001-to-2009 GreenKeys Search Tool: http://comcents.com/tty/greenkeyssearch.html
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