In my dissertation project in the field of Cultural Studies I follow the imaginations and images of „Switzerland“ and „Swiss“ national identity that occur in the interactions between producers and recipients of the Swiss Shortwave Service from the 1930s to 1960s. The interactions took place in the form of exchanged letters but also in the radio producer’s engagement with its audience through their own audience research. Core question of the qualitative study is how – in the case of the Swiss Shortwave Service in the mid-20th century – the construction of national identities and the perception and usage of international radio was intertwined. The empirical basis of the study contains listener’s mail, audience research documents, press articles, and further historical documents, which can be found in the archives of the Swiss Broadcasting Corporation in Berne.