no recordings available
see these pictures and information,
prepared by Maarten van Delft
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Callsigns:
PDB2
Frequencies Morse Telegraphy:
6792
10390
14817.5
Frequencies Radioteletype:
2840
3593
3714
3717
4632
4632.5
4837.5
5208
6792
6905
7401
Systems used:
50 Bd
SITOR