The transmitter Weißkirchen was a medium wave broadcasting facility located near Weißkirchen, Oberursel, Germany. It was the most powerful European AM transmitter of the American Forces Network and transmitted on 873 kHz with a power of 150 kilowatts. It started operation in May 1951 on 872 kHz and moved its frequency to 873 kHz in 1978 according the regulations of Waveplan of Geneva. The transmitter ceased broadcasting on 31 May 2013, and was decommissioned in September 2014. Its aerial consisted of three guyed lattice steel masts built in 1954-55. These masts, each eighty-six metres tall and insulated against ground, were arranged in a row with a distance of 140 metres between each mast.