Andy Stumpf preserved the sound of UDC (1987)
no pictures of QSLs or other info available
------------------------------------------------------------
Callsigns:
UDC (soviet times)
UTW (ukrainian times)
Frequencies Voice:
2182
2805
4393
Frequencies Morse Telegraphy:
448
500
3190
12711
22641
Frequencies Radioteletype:
518
6315.5
12627.5
12645.5
Systems used:
SITOR