dam was built around the site. In 1959, the 156-metre mast of the station had an antenna for TV and FM-transmission added on top, increasing its height to 236 metres. During this work, the medium wave program was temporarily transmitted from a triangular antenna installed at the site of the former 150-metre-tall wooden tower. After completion of the work, the medium-wave transmission frequency was changed from 722 kHz to 575 kHz. While this frequency also had better groundwave propagation, the change also had the goal of making reception of the Mühlacker transmitter working on the same frequency very difficult. In 1968–1969 a second guyed mast 211 metres high was built at Wiederau in direct proximity to the existing 235-metre-tall mast. This mast is in opposite to the old mast grounded and can therefore only used for FM and TV broadcasting. As result of the Wave plan of Geneva, the Wiederau transmitter had to change its frequency to 531 kHz. This frequency change ended its interference with the Mühlacker transmitter (which was still interfered with significantly by Wöbbelin transmitter), but now interfered with Beromünster transmitter in Switzerland, which also operated on 531 kHz. Until the inauguration of the new Radio Moscow transmitter at Wachenbrunn in 1989, it also served to transmit Radio Moscow programming. After German reunification, the number of FM transmitters at Wiederau increased, but the short wave transmitter was shut down in 1993 and all shortwave antennas were dismantled. In 1995, the medium wave transmitter moved its frequency from 531 kHz to 783 kHz, which ended its interference with German speaking medium-wave broadcasting stations. In 1998 a fully transistorized medium-wave transmitter was installed at the Wiederau transmitter. During this work one of the triangular antennas was replaced, which is now in use for the medium wave transmissions. The previously mentioned 236-metre-tall mast is only used for FM and TV transmissions today. References External links History of Wiederau transmitter (German) — 150-metre tower — main medium-wave antenna mast — FM-transmission mast , 125-metre-tall wooden towers at Skyscraperpage 150-metre tower Wiederau at Skyscraperpage Main mediumwave antenna mast at Skyscraperpage Site on Google Maps Sources 100 Jahre Funktechnik in Deutschland, Gerd Klawitter, Verlag für Wissenschaft und Technik, Berlin (Deutschland), 1997; Page 155-162. Radio masts and towers in Germany Buildings and structures in Leipzig (district) 1932 establishments in Germany Towers completed in 1932