Here is a recording of KSM's
telegraph wheel by Gabriel Schwartz (2008)
a nice telegram-form-QSL from the collection of Costas Krallis
(2001)
another telegram letter received by Gabriel Schwartz in 2008
see the website of the Maritime Radio Historical Society for
the whole story
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Callsigns:
KPH
KSM
Frequencies Morse Telegraphy:
426
500
4350.5
6474
8438.3
12993
16914
22445.8
Frequencies Radioteletype:
8433
12631
Systems used:
SITOR, 45 Bd