no recordings available
see this prepared verie from the files of Rudy van Dalen, 1989
here confirmations in a multi-QSL-letter
for W-361, UK-392,
GDA-322, CZE-409,
PT-285, OL-590,
TRZ-375, DAR-409,
and CHO-375 (Patrick Robic, 1999)
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Callsigns:
DAR
FNA
FNE
FNA and FNE are so-called negative callsigns,
resulting from carrier power reduction while modulation lasts
Frequencies Morse Telegraphy:
409