again, Andy Stumpf preserved the sound of this station (1987)
no pictures of QSLs or other info available
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Callsigns:
UDC
Frequencies Voice:
2182
2805
4393
Frequencies Morse Telegraphy:
448
500
12711
22641
Frequencies Radioteletype:
518
6315.5
12627.5
12645.5
Systems used:
SITOR