listen to the CQ call from
PKD (rb, 1974)
detailed QSL letter (Andreas Ibold, 1995)
------------------------------------------------------------
Callsigns:
PKD
Frequencies Voice:
2182
2690
4378
6215
6215.5
6504
8794
13110
Frequencies Morse Telegraphy:
430
500
4238
8461
12704.5
16861.7
17239.7
Frequencies Radioteletype:
6316
8418
16810
Systems used:
SITOR