 During World War II, the Allies noticed that certain German officials were making radio broadcasts from multiple time zones almost simultaneously.Analysts such as Richard H. Ranger believed that the broadcasts had to be transcriptions, but their audio quality was indistinguishable from that of a live broadcast and their duration was far longer than was possible even with 16 rpm transcription discs.In the final stages of the war in Europe, the Allied capture of a number of German Magnetophon recorders from Radio Luxembourg aroused great interest.