ULF (taajuusalue)
radiotaajuusalue 300 Hz–3 000 Hz From Wikipedia, the free encyclopedia
radiotaajuusalue 300 Hz–3 000 Hz From Wikipedia, the free encyclopedia
ULF on Kansainvälisen televiestintäliiton (ITU) termi sähkömagneettisen spektrin radiotaajuusalueelle 300–3 000 Hz (aallopituusalue 100–1 000 km). ULF on akronyymi englannin kielen sanoista ultra low frequency ('ultramatala taajuus').[1]
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