Nauen Transmitter Station (German: Grossfunkstelle Nauen or Sender Nauen) in Nauen, Havelland district, Brandenburg, Germany, is the oldest radio transmitting installation in the world. It was founded on 1 April 1906 by Telefunken engineer R. Hirsch on a 40-hectare property north of Nauen, leased from Fideikommissar Fritz Stotze.