The Collaborative International Dictionary of English v.0.48:
LF \LF\ n. (Electronics) Low frequency, a term used to refer to radio waves of a frequency from 30 to 300 kilohertz. Contrasted to HF, high frequency. [Acronym] Syn: low frequency. [WordNet 1.5]WordNet (r) 3.0 (2006):
LF n 1: 30 to 300 kilohertz [syn: low frequency, LF]The Free On-line Dictionary of Computing (19 January 2023):
LF Line Feed