Deutscher Wetterdienst Offenbach Meteo :

 

this recording from 1994 reveals the test picture from the longwave weather fax service on DCF54 from Mainflingen (rb) (watch out - more than 6 minutes to go!)
just in case you have no decoder at hand ;-) (seems that I need to make some adjustments at mine...) (someone to decode this clip in better quality? my high-class equipment is long-time gone...) (rb)
in 2017, Paul J Marsh decoded this mp3-soundclip from above with this result!

 

for a short period, german meteo stations had a shortwave net throughout the country. Lars Lundström received it in 1999.
a letter from 2004 from the Offenbach headquarters of German Meteo Service, verifying the shortwave transmissions from Hamburg Meteo (Vladimir Rozhkov)

 

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Callsigns:
DCF37
DCF54
DDA64

 

Frequencies Voice + Radioteletype:
5252.5
5355
5357.5
5832
5859



Frequencies FAX Picture Transmissions:

117.4
134.2

 

Systems used:
50 Bd
100 Bd
120 rpm