Mezger, on behalf of Felix Berge, elaborated on the subject of radio and emphasized the role of radio as a tool for shaping public mood and offering venues for counterpropaganda and surveillance. Then Luise Allendorf-Hoefer (Deutsches Museum) gave a presentation on the importance of radio programs under National Socialism and their role in spreading propaganda and certain visions of society. Allendorf-Hoefer enhanced her talk with archival audio recordings and a demonstration of the original radio device VE 301 (the “Volksempfänger”) from the 1930s. In her presentation, Allendorf-Hoefer provided insight into the “radio landscape,” which included German radio programs and foreign broadband. She also discussed the technical aspects of listening to the radio, also under clandestine conditions.
The next speaker, Izabela Paszko (IfZ), presented case studies from her research, which concerned coded messages and ways of passing officially forbidden information among civilians. Paszko discussed example sources from archives in Poland, namely the State Archive in Katowice and the Jewish Historical Institute. The following presentation of Carola Dahlke (Deutsches Museum) supplemented the speech of Paszko on cypher methods and provided a deeper insight into the history of cryptography. Dahlke demonstrated the use of American cypher machines and explained their use.