Articles | Volume 21
https://doi.org/10.5194/ars-21-65-2023
https://doi.org/10.5194/ars-21-65-2023
01 Dec 2023
 | 01 Dec 2023

Egbert von Lepel and the Invention of the Spark-Gap Transmitter

Wolfgang Mathis

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Short summary
Based on new archive sources, it is shown that Egbert von Lepel is one of the pioneers of early radio technology, which has not been adequately dealt with in the history of radio science. In particular, the significance of his 1907 patent of the spark-gap transmitter ("Löschfunkensender") is unknown, although it was granted as a key patent by the Imperial Patent Office in 1911. Therefore, Telefunken paid licenses to von Lepel, but this was the subject of a secret treaty of 1919.