Sagedusribade

Sagedusribad are contiguous ranges of radio frequencies that are allocated for specific services or technologies. They help organize the radio spectrum, reduce interference between different systems, and support predictable equipment design, licensing, and operation.

International coordination and national regulation

Allocations for sagedusribad are defined internationally by the ITU Radio Regulations, with national administrations implementing and enforcing them. Some bands are shared among services or use time-division or other management techniques to accommodate multiple requirements. Guard bands separate adjacent bands to further limit interference, and licensing or auctioning assigns access to users such as broadcasters, mobile operators, satellite providers, and public safety networks.

Common frequency bands and typical uses

Major bands are often described by their nominal ranges and associated services. Very low frequency (VLF) 3–30 kHz and low frequency (LF) 30–300 kHz support long-range time signals and navigation. Medium frequency (MF) 300 kHz–3 MHz is used for AM broadcasting in many regions. High frequency (HF) 3–30 MHz enables shortwave communication over long distances. Very high frequency (VHF) 30–300 MHz covers FM radio, television, and line-of-sight communications. Ultra high frequency (UHF) 300 MHz–3 GHz supports mobile networks, television, radar, and Wi‑Fi. Super high frequency (SHF) 3–30 GHz and extremely high frequency (EHF) 30–300 GHz are used for satellite links, radar, and advanced wireless systems.

Usage and spectrum management

Sagedusribad determine where and how technologies operate, with licensing, regulations, and technical standards shaping deployment. Spectrum management aims to balance public interest, technological innovation, and efficient use of the finite radio spectrum.