Bet Dagan Meteo :

 

listen again to a test transmission, RTTY 50 Baud (rb, 1985) just in case you have no decoder at hand ;-)

 

they used to verify with real QSL cards; here from 1984 (Michael Oexner)...
...and here the version from 1985 (rb)

 

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Callsigns:
4XM *

 

Frequencies Radioteletype:
3834
7340
13447

 

Systems used:
50 Bd