no recordings available
see this nice QSL by card (Lars Lundström, 1989)
a fine QSL-letter from 1992 (Maarten van Delft)
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Callsigns:
PWF
PWF33
PWS33
Frequencies Voice:
12207
12209
Frequencies Morse Telegraphy:
12804
16960
22581
Frequencies Radioteletype:
6407.5
12209
Systems used:
50 Bd
75 Bd