At the Grimeton radiostation (Unesco world heritage)
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The Grimeton VLF transmitter is a VLF transmission facility at Grimeton close to Varberg, Sweden. It has the only working Alexanderson alternator rotating armature radio transmitter in the world and is classified as a World Heritage Site.
The transmitter was built in 1922 to 1924 to operate at 17.2 kHz, although it is designed on frequencies up to 40 kHz.. The antenna is a 1.9 km (1.2 mile) flattop wire aerial consisting of eight horizontal wires suspended on six 127-metre high freestanding steel pylons in a line, that function as a capacitive top-load to feed energy to six grounded vertical wire radiating elements.
The Grimeton VLF transmitter location is also used for shortwave transmissions, FM and TV broadcasting. For this purpose, a 260 metre high guyed steel framework mast was built in 1966 next to the building containing the 40 kHz transmitter.
At the Grimeton radiostation (Unesco world heritage)
Buy this photo on Getty Images : Getty Images
The Grimeton VLF transmitter is a VLF transmission facility at Grimeton close to Varberg, Sweden. It has the only working Alexanderson alternator rotating armature radio transmitter in the world and is classified as a World Heritage Site.
The transmitter was built in 1922 to 1924 to operate at 17.2 kHz, although it is designed on frequencies up to 40 kHz.. The antenna is a 1.9 km (1.2 mile) flattop wire aerial consisting of eight horizontal wires suspended on six 127-metre high freestanding steel pylons in a line, that function as a capacitive top-load to feed energy to six grounded vertical wire radiating elements.
The Grimeton VLF transmitter location is also used for shortwave transmissions, FM and TV broadcasting. For this purpose, a 260 metre high guyed steel framework mast was built in 1966 next to the building containing the 40 kHz transmitter.