Dar-es-Salaam Aero :

 

in this recording from 1986 you will hear Dar-es-Salaam and Kigali exchanging flight information (rb)

 

this letter is from the former operating agency IAL (Peter Conway, 1975)
very detailed QSL letter for the air/ground services (Michael Oexner, 1984)
another detailed one for the aeronautical fixed telecommunications network (rb, 1984)
QSLs like these give a feeling of a useful hobby to the DXer... (Michael Oexner, 1984)

 

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Callsigns:
5HD **

 

Frequencies Voice:
4611
5095
5658
6959
7475
8870
8879
8903
11300
13288
13306

 

Frequencies Morse Telegraphy:
7550
16245

 

Frequencies Radioteletype:
2794
3160
3836
4000.6
4636.6
6860
7445
7628.1
7990
8024.1
9164
9446
11175
11425
13593.6
14245
14355

 

Systems used:
100 Bd
50 Bd