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Intermediate frequency (1 kHz–10 MHz)

The intermediate frequency range is not a clearly defined frequency range; it lies between the low frequency (Low frequency (0.1 Hz–1 kHz)) and the radiofrequency (Radio frequency (10 MHz–300 GHz)). According to the WHO it ranges from 300 Hz to 10 MHz (WHO: Intermediate Frequencies). However, some authors and the EMF-Portal narrow it down a little bit more and define the intermediate frequency range only from up to 1 - 10 kHz.
The intermediate frequency range in the electromagnetic spectrum