hear the typical sound of the RYRYRY... of the 50baud test tape
(rb, 1984) 
just in case you have no decoder at hand ;-)
recorded in 1984, here you
have Sanaa, Jeddah,
Cairo & Khartoum
working each other & aircrafts (rb)
no pictures of QSLs or other info available
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Callsigns:
HZJ
Frequencies Voice:
2992
3095
3453
5555
5564
5577
5658
5667
6544
6610
6701
7990
8822
8837
8847
8879
8918
8951
8990
9115
10587
11300
13288
13312
Frequencies Morse Telegraphy:
9330
Frequencies Radioteletype:
3999
4034.7
5167
5185
5373
5733
5746
6740
7957
7979
8098
8191
9830
10647
10695
11290
13752
14370.5
Systems used:
100 Bd
50 Bd