Observatorio Cagigal, Caracas :
a recording from the collection of Rudy van Dalen
very detailed QSL card and letter (rb, 1981)
and an even more detailed info-sheet (rb, 1981)
friendly and detailed verification letter (Frank Schüttig, 1983)
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Callsigns:
YVTO
Frequencies Voice:
5000
5010
5030
6100