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Very low frequency

Very low frequency or VLF is the ITU designation for radio frequencies (RF) in the range of 3–30 kHz, corresponding to wavelengths from 100 to 10 km, respectively. The band is also known as the myriameter band or myriameter wave as the wavelengths range from one to ten myriameters (an obsolete metric unit equal to 10 kilometers). Due to its limited…

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Frequency range
3–30 kHz
Wavelength range
100-10 km

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Overview

Propagation characteristics

Antennas

Modulation

Applications

Amateur use

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Very low frequency

Nodes148
Edges147
Triples30
Avg. degree1.99
Density0.013514
Components1

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Very low frequency

Top relations

related to External links · 21
Very low frequency → AmericaRadio, Archived, As, Definition, Discussion GroupTomislav Stimac, ELF, Listen, Longwave, Louisville VLF MonitorLarry's Very, Low Frequency, NetworkStanford University VLF, PC-based VLF-receptionGallery, UK Archived, VLF, VLF Receiver, VLF Receiver NOTE, VLF-signalsNASA, VLF-transmitters, Wayback MachineIW0BZD VLF TUBE, Wayback MachineMark's Live Online
Frequency range · 1
Very low frequency → 3–30 kHz
Wavelength range · 1
Very low frequency → 100-10 km

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Important terminology

vlf used antenna antennas radio frequency khz power waves signals high transmitters frequencies band low bandwidth military communication range 10

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Very low frequencyFrequency range3–30 kHz1.00infobox
Very low frequencyWavelength range100-10 km1.00infobox
theinstance ofHigh-power stations use variations on the umbrella antenna0.80text
the aurorainstance ofThe WWVL service was discontinued in July 1972.Geophysical and atmospheric measurementNaturally occurring signals in the VLF band are used by geophysicists for long range lightn…0.80text
the aurorainstance ofGeophysical and atmospheric measurementNaturally occurring signals in the VLF band are used by geophysicists for long range lightning location and for research into atmospheric…0.80text
a GPS disciplined oscillator or a rubidium standard in order to support such long duration coherent detectioninstance ofTransmissions typically last from one hour up to several days and both receiver and transmitter must have their frequency locked to a stable reference0.80text
decoding.Amateur equipmentRadiated power from amateur stations is very smallinstance ofTransmissions typically last from one hour up to several days and both receiver and transmitter must have their frequency locked to a stable reference0.80text
ranging from 1 μW to 100 μW for fixed base station antennasinstance ofTransmissions typically last from one hour up to several days and both receiver and transmitter must have their frequency locked to a stable reference0.80text
and up to 10 mW from kite or balloon antennasinstance ofTransmissions typically last from one hour up to several days and both receiver and transmitter must have their frequency locked to a stable reference0.80text
Very low frequencyrelated to External linksLongwave0.60section
Very low frequencyrelated to External linksAmericaRadio0.60section
Very low frequencyrelated to External linksDiscussion GroupTomislav Stimac0.60section

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