OTS New Delhi :
historic recording from Hajo Russow, 1968
another voice mirror (rb, 1974)
verification by PPC (rb, 1992)
------------------------------------------------------------
Callsigns:
ATB **
ATC **
ATD **
ATE **
ATG **
ATJ **
ATK **
ATP **
ATQ **
ATR **
ATS **
Frequencies Voice:
10405
10705
10711
19370
19604
20515
22740
Frequencies Radioteletype:
6815
7775
7943
10350
10450
10535
14769
14785
15722
18035
18665
19555
23130
Systems used:
50 Bd