The Heusweiler transmitter  is a facility for medium wave broadcasting near Heusweiler, Germany, which originally went into service on 23 December 1935. On 19 June 1946 transmitter Heusweiler went in service again.Original transmitterIt used a t-aerial, which was up-hung on two 35 and 31 meters tall wooden towers. The Heusweiler transmitter was destroyed on March 17, 1945 by war damage.First a t-aerial was used, which was, in the same year, replaced by a 50 metre tall steel framework mast insulated against ground, which exists still today and serves as reserve antenna.Replacement transmittersIn 1948, a 120 meter high steel framework mast insulated from ground was built in Heusweiler. In the following years, the transmitting power of the Heusweiler transmitter was steadily increased.In 1965, another radio mast with a height of 120 meters was built, and in 1973 the transmitting power was increased to 1200 kilowatts, with the power reduced to 600 kilowatts at night. The Heusweiler transmitter was thereby the most powerful medium wave transmitter in Germany, and the most powerful transmitter of the ARD.From 1973 to 1994 the Heusweiler transmitter transmitted the program of Europawelle Saar.Current transmitterSince 1994, the transmitter has been used for broadcasting the program of Deutschlandfunk. The transmitting power is permanently 600 kilowatts, however Deutschlandfunk closed down all its Medium Wave transmitters, including the Heusweiler radio transmitter on December 31 2015.