Paris Volmet :

 

a recording from Rudolf P Gröger, made in the late 1960's
about 10 years later, Willi Passmann made this recording

 

very nice and detailed QSL form letter with colours (Frank Schüttig, 1974)
another nice coloured form letter (Willi Passmann, 1975)

 

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Frequencies Voice:
2980
5575
11391