The VLF band is used for a few radio navigation services, government time radio stations (broadcasting time signals to set radio clocks) and for secure military communication . Since VLF waves can penetrate at least 40 meters (131 ft) into saltwater, they are used for military communication with submarines.
Read moreWhat waves have the low frequency?
Bands of radio waves BandFrequency rangeWavelength rangeExtremely Low Frequency (ELF)<3 kHz>100 kmVery Low Frequency (VLF)3 to 30 kHz10 to 100 kmLow Frequency (LF)30 to 300 kHz1 m to 10 kmMedium Frequency (MF)300 kHz to 3 MHz100 m to 1 kmWhat Are Radio Waves? | Live Science www.livescience.com › 50399-radio-waves
Read moreWhat has a low frequency sound?
Low-frequency noise is common as background noise in urban environments, and as an emission from many artificial sources: road vehicles, aircraft, industrial machinery, artillery and mining explosions, and air movement machinery including wind turbines, compressors, and ventilation or air-conditioning units .
Read moreWhat are the three types of low frequency waves?
What are we talking about? AcronymFull NameFrequency RangeELFExtremely low frequency30 Hz – 300 HzVF or ULFVoice frequency or Ultra Low frequency300 Hz – 3 kHzVLFVery low frequency3 kHz – 30 kHzLFLow frequency30 kHz – 300 kHzHF and Lower Frequency Radiation – Introduction www.met.nps.edu › ~psguest › EMEO_online › module3 › module_3_1
Read more