The SWL QSL Card Museum Argentina Central & South America Radiodifusion Argentina - 1970, 1974, 1990, 1998, 2015 QSL and Pennant Contributed by Istvan Hegedus (Hungary) Radiodifusion Argentina - 1974 QSL Contributed by Istvan Kiss (Hungary) Radiodifusion Argentina - 1990  QSL Contributed by Bill McDavitt Radiodifusion Argentina - 1998 QSL Contributed by Erich Bergmann (Germany) Radiodifusion Argentina - 2015 QSL Contributed by Istvan Hegedus (Hungary)