RTTY test transmission, 'high speed'
75baud (rb, 1983) %20(rainer%20brannolte%2C%20d)%20mc-908-2-19.jpg){kind=small}
just in case you have no decoder
at hand ;-)
PPC from 1985, with interesting details (rb)
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Callsigns:
4UA
Frequencies Radioteletype:
6897
7597
7608
9122
9157
9845
10461
10647
11510
14642
15568
15827
15992
16232
17565
19478
19730
19734
19824
19870
19980
20466
22750
23692
Systems used:
50 Bd
75 Bd