received in 1984: the channel free marker of GXW (rb)
friendly verification letter from Whitehall HQ (Rudy van Dalen,
1988)
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Callsigns:
GXW
MAN
Frequencies Voice:
3744.5
3854
6688
8993
8997
11243
Frequencies Morse Telegraphy:
3188.6
3862
Frequencies Radioteletype:
3187.3
3862.1
3884
3931
Systems used:
50 Bd
75 Bd