ヴァールベリの無線局
1. Grimeton VLF transmitterThe 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 for frequencies around 40 kHz. The radiating element is a wire aerial hung on six 127-metre high freestanding steel pylons, that are grounded.
Read “Grimeton VLF transmitter” on English Wikipedia
Read “ヴァールベリの無線局” on Japanese Wikipedia
Read “Grimeton VLF transmitter” on DBpedia
Read “Grimeton VLF transmitter” on English Wikipedia
Read “ヴァールベリの無線局” on Japanese Wikipedia
Read “Grimeton VLF transmitter” on DBpedia
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