Short for radio frequency, any frequency within the electromagnetic spectrum associated with radio wave propagation. When an RF current is supplied to an antenna, an electromagnetic field is created that then is able to propagate through space. Many wireless technologies are based on RF field propagation.
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
Radio frequency is also abbreviated as rf or r.f..