Radio frequency bands are segments of the electromagnetic spectrum used for radio
communication. They range from 3 Hz to 3,000 GHz (3 THz) and are categorized by the
International Telecommunication Union (ITU) and the Institute of Electrical and
Electronics Engineers (IEEE) for various applications.
Here are the main radio frequency bands and their uses:
- Extremely Low Frequency (ELF): 3 Hz to 30 Hz. Used in seismic studies and
communication with submarines. - Super Low Frequency (SLF): 30 Hz to 300 Hz. Used for communication with
submarines. - Ultra Low Frequency (ULF): 300 Hz to 3 kHz. Used in seismic studies.
- Very Low Frequency (VLF): 3 kHz to 30 kHz. Used in time radio stations and
communication with submarines. - Low Frequency (LF): 30 kHz to 300 kHz. Used in marine radio and aircraft
navigation. - Medium Frequency (MF): 300 kHz to 3 MHz. Used in AM radio broadcasting.
- High Frequency (HF): 3 MHz to 30 MHz. Used in shortwave radio and amateur
radio. - Very High Frequency (VHF): 30 MHz to 300 MHz. Used in FM radio
broadcasting and television2. - Ultra High Frequency (UHF): 300 MHz to 3 GHz. Used in television
broadcasting and mobile networks. - Super High Frequency (SHF): 3 GHz to 30 GHz. Used in satellite
communication and radar. - Extremely High Frequency (EHF): 30 GHz to 300 GHz. Used in advanced
radar and satellite communication. - Terahertz or Tremendously High Frequency (THF): 300 GHz to 3,000 GHz.
Used in scientific research and advanced communication systems.