1920s Grimeton VLF transmitter

The Grimeton VLF transmitter is a VLF transmission facility near Grimeton close to Varberg in Sweden.

It was built in 1923 and has the only workable machine transmitter in the world. For its radiating element it uses a wire aerial hung on six 127-metre high freestanding steel towers looking like gigantic pylons. These towers are grounded. On July 2, 2004 the Grimeton VLF transmitter was declared a World Cultural Heritage site by UNESCO. The twin station Nadawcza Radiostacja Transatlantycka Babice in Babice, Poland was destroyed in 1945.