a recording from 2012 (rb)
from the times of the GDR,
here is a PPC from the collection of Frank Schüttig (1983)
a very nice QSL-card from the collection
of Patrick Robic (1999)
here a look to the antenna in the
south of Berlin, close to the now completed site of BER airport
(serving old SXF), but outside Berlin city limits (rb, 2014)
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Callsigns:
MW
Frequencies Morse Telegraphy:
309