the standard ECMP marker
in telegraphy, as transmitted by stations NST
/ NRK / AOK
/ GXH (rb, 1974)
a detailed verification, a nice card... (rb, 1986)
they changed the colour of their QSL to blue (Ary Boender)
here is a full-detailed card (Lars Lundström, 1990)
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Callsigns:
GXH
Frequencies Voice:
4601
Frequencies Morse Telegraphy:
2589
3725
4001
4558
4601
7504.5
12691
13915
14467
14553
14860
14982
16400
17690
18205
18245
18800
19320
19548
19604
19818
19861
Frequencies FAX Picture Transmissions:
3731
8000.4
18245
Frequencies Radioteletype:
69
Systems used:
120 rpm
75 Bd