S Emb Hanoi :
no recordings available
as always, very reliable QSLer (rb, 1984)
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Callsigns:
SAM59
Frequencies Voice:
18945
23529
Frequencies Radioteletype:
17428.9
18187.5
18757.9
19218
20699.9
23528
23547.9
23592.9
Systems used:
75 Bd
SWED-ARQ