Trivandrum Aero :

 

no recordings available

 

here a verification of a rare catch: telegraph traffic between domestic indian airports (Michael Kunze, 1993)

 

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Callsigns:
AVT

 

Frequencies Voice:
2872
2913
2931
5514
6533
6556
8882
8909
8917
10066

 

Frequencies Morse Telegraphy:
7700