The SWL QSL Card Museum Poland Europe Polish Pathfinders Broadcasting Station - 1970, 1980, 1984 QSL Contributed by Istvan Hegedus (Hungary) Polish Pathfinders Broadcasting Station - 1980  QSL Contributed by Olli Laine (Finland) Polish Pathfinders Broadcasting Station - 1984 QSL Contributed by Istvan Hegedus (Hungary)