rather rough sounding dx-signal:
CQ de XSX (rb, 1982)
a fine QSL card from the collection of Frank Schüttig (1984)
this very nice verification
arrived in 1998 (ti25)
see here a verification of an extraordinary reception, made by
Michael Oexner in 2010
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Callsigns:
XSX
Frequencies Voice:
2055
2182
2191
2670
Frequencies Morse Telegraphy:
420
438
464
500
8445
8506
12695.5
12785
17011
17053
22459
25391
Frequencies Radioteletype:
2187:5
4213.5
6325
8428
12599
16838
16854
Systems used:
SITOR
DSC