Due to a lack of financial resources, we unfortunately have to suspend the import of any new radio frequency and mobile phone-related articles as of now (November 27, 2017). We apologize for this inconvenience and will keep you informed.

Because we received a large number of inquiries, we set up a bank account to accept donations. With their aid, we hope to resume, at least partly, the import of newly published articles to the RF archive of the EMF-Portal. Any contribution is greatly appreciated. Thank you for your kind support!

DONATION ACCOUNT: Uniklinik RWTH Aachen, IBAN: DE27 3905 0000 0013 0040 15, BIC: AACSDE33, Reference: GB-FM/380454/Arbm


intermediate frequency

Electromagnetism. The intermediate frequency range is not a clearly defined frequency range; it lies between the low frequency (0.1 Hz–1 kHz) and the radiofrequency (10 MHz–300 GHz). According to the WHO it ranges from 300 Hz to 10 MHz). 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.
Applications are anti-theft devices, visual display units containing cathode ray tubes, and radio transmitters. In this frequency range stimulation effects of nerves, muscles, and sensory receptors as well as thermal effects may occur.