The SWL QSL Card Museum Costa Rica Central & South America Radio Impacto - 1984, 1985, 1988, Pennant, Sticker QSL Contributed by Thomas Adam / Germany Radio Impacto - 1985 QSL Contributed by Istvan Kiss (Hungary) Radio Impacto - 1988 Radio Impacto Pennant Radio Impacto Sticker QSL, Pennant and Sticker Contributed by Istvan Hegedus (Hungary)