NDB Antwerpen (Broechem) *ONW :

 

here a recording made in 2011 close to the belgian border (rb)

 

this letter confirms the reception of NDBs WW-309 and ONW-355 to Bernhard Hein (2009)
see here the picture from the above letter in original size

 

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Callsigns:
ONW

 

Frequencies Morse Telegraphy:
355
359