Kobnhavn Meteo :

 

here a recording of OXT; they identified with F1B-morse before starting fax-transmissions (rb, 1985)

friendly & detailed letter and card from the collection of Rudy van Dalen (1982)
here a detailed QSL letter from the collection of Vladimir Rozhkov (2004)


here is a look to their website

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Callsigns:
OXT

 

Frequencies FAX Picture Transmissions:
5850
9360
13855
17510

 

Frequencies Radioteletype:
13855

 

Systems used:
120 rpm
50 Bd