UNO Geneva (4UZ) :

 

a RTTY test transmission from 4UZ (rb, 1985) just in case you have no decoder at hand ;-)

 

see this QSL-card for a regular SSB-feed from UN Radio (Maarten van Delft, 1964)
a PPC from 1981 from the collection of Lars Lundström
Joop Balneger received this nice view card for QSL in 1985

 

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Callsigns:
4UZ
HBX37

 

Frequencies Voice:
7443
10461
14500
14640
15990
20068

 

Frequencies Morse Telegraphy:
17520

 

Frequencies Radioteletype:
5778
6897
7808
7887
9122
9157
10145
10278
10458
10460
10461
10647
10663
11485
12030
12236
13457
13999
14405
14582
14642
14643.7
14853
15992
16184
16188
16232
16234
17565
19280
19309.5
19313
19635
19730
19817.5
19821.5
19828
19867
19870
19922.5
19923
20070
23722
27250

 

Systems used:
50 Bd
75 Bd
PACTOR
RS-ARQ-240
SITOR
TWINPLEX