listen here to a historic
recording from the files of Hajo Russow (1965) from the old OTS,
predecessor of PTC
no pictures of QSLs or other info available
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Callsigns:
P224PT
P2A2
P2A20
Frequencies Voice:
5076.5
5780
6990
11976
14412.5
15470
Frequencies Radioteletype:
11495
13430
15810
Systems used:
50 Bd