a recording from the collection
of Rudy van Dalen (1991)
here an interesting letter from the collection of Ary Boender
(1983)
this letter was received by Rudy van Dalen in 1984
beautiful QSL card from the
collection of Patrick Robic (1997)
------------------------------------------------------------
Callsigns:
GND *
Frequencies Voice:
1650
1715
1722
1856
1866
1946
2182
2607
2691
2698
2779
3617
3666
Frequencies Morse Telegraphy:
458
500
512
Frequencies Radioteletype:
2780.7
3615.7
Systems used:
AUTOSPEC-68
SITOR