Radioband

Radioband is a term used to refer to ranges of the radio frequency spectrum allocated for wireless communication and broadcasting. It spans from a few kilohertz to tens of gigahertz and above, depending on the standard used by regulatory agencies. In practice, the RF spectrum is divided into named bands by frequency ranges, such as VLF, LF, MF, HF, VHF, UHF, SHF, and EHF.

Each band has typical propagation characteristics and common uses. VLF and LF support long-distance communication via ground wave and, for VLF, submarine comms; MF is used for AM radio and navigational beacons; HF enables shortwave broadcasting and long-distance military comms due to ionospheric reflection; VHF carries FM radio, television, air traffic control; UHF carries television, mobile phones, Wi-Fi; SHF and EHF are used for radar, satellite links, microwave links, and some wireless networks.

Allocation and regulation: The ITU and national regulators allocate bands for specific services and require licenses; some portions are reserved for unlicensed use (license-exempt) such as certain ISM bands and some wireless LAN bands. The exact boundaries of each band and the allowed uses can vary by country and standard.

In engineering and hobbyist contexts, the term radioband is often used to describe a particular band (for example the L-band, S-band, or X-band) or to discuss transmission systems that operate within a given frequency range.