The Epoch Times article on the station.:
UNESCO's World Heritage List includes the Grimeton Radio Station in Sweden. In 1924 this was the state of the art, one of a global network of 18 stations communicating in Morse code. Its huge towers support an antenna that could send radio signals to the United States. The 200 kilowatt generator that powered the station too was state of the art, and is the only one of the design still operational.