The war of the airwaves in Portugal: foreign propaganda on short and medium waves, 1933-1945

This article focuses on the start of the "war of the airwaves" in Portugal. It provides data on the first foreign shortwave broadcasts in Portuguese, describing the background to those initial broadcasts and also analyzing their impact on Portuguese public opinion, as well as the degree of importance afforded such broadcasts by the Allies and the Axis Powers during World War II. Moreover, the article also details some of the strategies used by the warring nations to influence the editorial line of Portuguese radio stations.