Astrophysics (Index)About

very low frequency

(electromagnetic radiation, frequency 3-30 kHz)

Very low frequency (VLF) radiation is defined by the ITU to be electromagnetic radiation within the frequency range of 3-30 kHz. It is the next lower frequency-range below the ITU classification Low Frequency (LF, which is a bit lower than the frequencies commonly viewed in what is termed low frequency radio astronomy) and with ultra low frequency (ULF) coming next. VLF is generally classified as a lower-frequency portion of the radio spectrum, but definitions of the frequency-range of radio are not consistent and some would classify VLF as subradio.

Further reading:
10km30kHz124peVbeginvery low frequency
100km3kHz12peVendvery low frequency

Referenced by pages:
ultra low frequency (ULF)