a recent recording fron Nils Schiffhauer (2011)
here a PPC from 1985 (rb)
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Callsigns:
DUM
Frequencies Voice:
2998
3470
3485
3834
5447.5
5655
6532
6562
6613
7689
7692
8825
8903
8942
10066
11396
13300
13309
17904
Frequencies Radioteletype:
9076.2
11400
Systems used:
50 Bd
SITOR