A general term for any frequency within the electromagnetic spectrum associated with radio wave propagation.  For purposes of electromagnetic interference, radio frequency covers frequencies ranging from tens of kilohertz to several gigahertz.  However radio frequencies may be construed to consist of any frequency.

These frequencies make up part of the electromagnetic radiation spectrum:

·      Ultra-low frequency (ULF) -- 0-3 Hz

·      Extremely low frequency (ELF) -- 3 Hz - 3 kHz

·      Very low frequency (VLF) -- 3kHz - 30 kHz

·      Low frequency (LF) -- 30 kHz - 300 kHz

·      Medium frequency (MF) -- 300 kHz - 3 MHz

·      High frequency (HF) -- 3MHz - 30 MHz

·      Very high frequency (VHF) -- 30 MHz - 300 MHz

·      Ultra-high frequency (UHF)-- 300MHz - 3 GHz

·      Super high frequency (SHF) -- 3GHz - 30 GHz

·      Extremely high frequency (EHF) -- 30GHz - 300 GHz

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