Rolf Gert Trailers

Die Abenteuer der schönen Dorette Trailer (1921)

01 September 1921

Unsichtbare Brücken Trailer (1932)

18 August 1932

In the broadcasting center of a radio station, visitors are informed in a kind of educational course about how "electric waves" are generated and how they are converted into sounds that can then be heard on the radio.