listen again to a test transmission,
RTTY 50 Baud (rb, 1985) -(rb)-(mc-911-1-21).jpg){kind=small}
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