FTS Cayenne :

 

for whatever reason, many recordings here: this is from 1971, male voice, english and french (rb)
whereas this is an english and french voice mirror by female voice (rb, 1972)
here the female voice in french only (rb, 1971)
and then female voice in english only (rb, 1971)

 

a QSL letter issued in 1968 to Lars Lundström
here you see a detailed QSL letter from FTS Cayenne (rb, 1971)
this QSL form letter from 1973 has no technical information (Andy Schmid)

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Callsigns:
FXC **
FZB **
FZC **
FZD **

 

Frequencies Voice:
6816
7790
7999
9230
9814
9840
10835
11650
12040
12128
12214
13685
15556
15568
15613
15944
16095
18235
19171
19610
23145
24243

 

Frequencies Radioteletype:
15568

 

Systems used:
50 Bd