a recording from 2020, using
a swedish online receiver (rb)
Rudy van Dalen received this nice card in 1983
a QSL-letter from the collection
of Patrick Robic (2000)
a letter similar to the above,
and a detailed flightchart were sent to Dieter Pohlmann in 2009,
showing *OA-338 and *OJ-403
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Callsigns:
OA
Frequencies Morse Telegraphy:
338