Reichs-Rundfunk-Gesellschaft

The Reichs-Rundfunk-Gesellschaft (RRG), loosely translated as the Empire Broadcasting Company, was a network of nine German radio broadcast companies active from 1925 until 1945. In 1933 it was nationalized by the Nazi government and was used extensively by the Ministry of Public Enlightenment and Propaganda.

Walter Weber, while working for Hans Joachim von Braunmühl at the RRG, made many improvements in the field of magnetic tape sound recording. The most widely significant was the discovery of high frequency bias. This provided a major improvement in the fidelity of recordings. Ironically, others made the same discovery of HF bias before and after, but it was Weber's work that became widely used.

References

• Google translation of German Wikipedia page