In dictionaries:
Low-frequency oscillation
an electronic frequency that is usually below 20 Hz and creates a rhythmic pulse or sweep.
Low-frequency effects
The low-frequency effects channel is a band-limited audio track that is used for reproducing deep and intense low-frequency sounds in the 3–120 Hz frequency range.
Low-frequency radar
radar which uses frequencies lower than 1 GHz such as L-band, UHF, VHF, and HF, as opposed to the usual radar bands, which range from 2 GHz to 40 GHz.
Low-frequency radio range
The low-frequency radio range, also known as the four-course radio range, LF/MF four-course radio range, A-N radio range, Adcock radio range, or commonly "the range", was the main navigation system used by aircraft for instrument flying in the 1930s and 1940s, until the advent of the VHF omnidirectional range, beginning in the late 1940s.
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