Rudy van Dalen recorded them in 2003
no pictures of QSLs or other info available
you should really watch the
in-depth article from Nils Schiffhauer on the aeronatic nets
in the Soviet Union and their successor states
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Callsigns:
Santim
Frequencies Voice:
3245
3422
4672
4712
5596
6945
7870
.