listen to this recording
from 2011 (rb)
Rudi Renkwitz received this beautiful QSL-card in 2006
see this PPC-QSL from the collection of Bernhard Hein (2008)
here a picture of the NDB's transmitting facility (rb, 2015)
this NDB is associated to the Nordholz
Naval Airbase
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Callsigns:
NDO
Frequencies Morse Telegraphy:
372