New Delhi Aero :
listen to New Delhi Aero working a Speedbird flight in this recording from 1992 (Rudy van Dalen)
a PPC from 1985, unfortunately without details (rb)
------------------------------------------------------------
Callsigns:
AWD
Frequencies Voice:
2931
3446
3467
5547
5658
6624
8889
8891
8906
8936
8938
8948
10018
10066
13288
13312
13336
Frequencies Morse Telegraphy:
4570
9204
15895
Frequencies Radioteletype:
4024.5
4033
4052.5
8071.5
12315
12320
Systems used:
50 Bd