Abbreviation for: very low frequency Fr: VLF
Very Low Frequency, 3 KHz-30 KHz. Used for long range navigation in combination with Omega
geophysical exploration technique using very low frequency waveforms
Very low frequency. The spectrum extending from 10 to 30 kHz as designated by the Federal Communications Commission.
Very Low Frequency. Radio frequencies in the 3-30 kHz band.
Very low frequency. It is a radio frequency band from 3 kHz to 30 kHz.
Very Low Frequency - The portion of the electromagnetic spectrum with frequencies between 3 and 30 KHz.
Very low frequency. Refers to the frequencies in the band between 10 and 30 kHz.
Very Low Frequency. A range of electromagnetic frequencies where ground-canceling metal detectors typically operate. This range extends from about 1 kHz to 50 kHz with most detectors operating in the 3 kHz to 30 kHz range.
very low frequency. Electromagnetic energy in the approximate frequency range of 3,000 hertz (3 kHz) to 30,000 hertz (30 kHz).
ery ow requency The 3-30kHz portion of the electromagnetic spectrum. The now defunct Omega world-wide navigation system operated in this band.
Type of metal detectors, usually 3 to 30 kHz
Very Low Frequency. International Telecommunications Union designation for the 3-30 kHz band of frequencies.
Abbreviation for very low frequency. See radio frequency band.