NDB Berlin-Blankenfelde *MW:

 

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 everlasting construction site of new BER airport (but serving old SXF) (rb, 2014)

 

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Callsigns:
MW

 

Frequencies Morse Telegraphy:
309