DHI Hydrographic Institute, Hamburg :

 

This station was producing, for many years, time signals that were disseminated through the german coastal radio stations 'Norddeich Radio' and 'Kiel Radio'. DHI did not have own transmitters. for a long time, these transmissions where the only way to get a 'real' QSL for DAN or DAO. Transmissions were made twice daily, at noon and at midnight, for 5 minutes in telegraphy (A1 or A2).


this QSL-card verifies transmissions from both stations (Willi Passmann, 1976)

 

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Callsigns:
DAM
DAN
DAO

 

 

Frequencies Morse Telegraphy:
2614
2775
4265
6475.5
8638.5
12763.5
16980.4