Bolinas Radio, CA :

 

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