France had 2 missile test centres: Flores (Azores), and Biscarrosse in France. They had a direct radio link...:
no recordings available
friendly letter confirming
reception (Maarten van Delft, 1984)
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Callsigns:
CUF55
Frequencies Voice:
9829
10680
10925
11272
13240
13245.5
13927
14717
14946
16270
18103
18110
18116
18129
20810
Frequencies Radioteletype:
14648
Systems used:
50 Bd