NDB Holesov *HLV :

 

this recording was made with the help of an online receiver (rb, 2015)

 

QSL by detailed letter from the joint civil-military operators (Patrick Robic, 2000)
Obviously, the use later changed to 'civil', as this detailed letter explains (Dieter Pohlmann, 2010)

 

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Callsigns:
HLV

 

Frequencies Morse Telegraphy:
448