The transmitter Grünten on the summit ridge of the Übelhorn, the highest elevation of the Grünten, is a 94.5 meter high broadcasting tower of the Bavarian Radio (BR), which was built in 1951. Originally it was 38 meters high. 1956 followed for the broadcast of the first television program an increase to 52 meters, 1994, the transmission tower was 92 meters high. The basic network transmitter, a steel lattice tower with attached antenna cylinder, supplies the southern part of the administrative district Schwaben in Bavaria and large parts of the region Bodensee-upper Swabia in Baden-Wuerttemberg with radio and television. To supply the transmitter, the BR operates the Grüntenbahn, a cable car that has been open to the public once a week since June 2007 in the summer months. Since May 2014, the public driving on the Grünten is set.
Three DVB-T multiplexes, five BR radio programs and Antenne Bayern on FM and one DAB frequency block will be broadcasted. Since 1989 send from here also two radio programs of the Südwestrundfunk (SWR1 Baden-Wuerttemberg and SWR3), since originally intended by the then Südwestfunk to supply Upper Swabia transmitter location Schwarzer ridge (in Isny im Allgäu) could not be built. Since December 2017, the DAB-Mux of the SWR now also sends from there.
The transmission power of all Bavarian FM radio programs is 100 kW. In the meantime, it had to be reduced because at the Grüntengipfel - otherwise due to the low height of the transmitting antenna - the legal limit values for electromagnetic field strengths would have been exceeded in certain areas. After a conversion is sent again with the maximum allowable power of 100 kW.
Source: Wikipedia
de.wikipedia.org/wiki/Sender_Gr%C3%BCnten