ULF

ULF can refer to:

Ultra low frequency, the radio frequency band from 300 Hz to 3 kHz
Ultra Large Format, used for cameras producing negatives larger than 8" x 10"
Ultra Low Floor, is a type of tram
United Labour Front, a defunct political party in Trinidad and Tobago
Upplands lantarbetareförbund, a Swedish farm workers union
Ulf, a common first name in Scandinavia and Europe

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