Ashkabad Aero :

 

Nils Schiffhauer recorded them here in 2018

this letter from Maarten van Delft was received in 2001
in 2015, Patrick Robic received this letter in russian from the aeronautical administration

 

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Callsigns:
Poyma

 

Frequencies Voice:
3467
4669
4681
4728
4755
5145
5658
6532
6945
8951
10015
10018
17964