radiokäytössä

Radiokäytössä is a Finnish term meaning "in radio use" or "in use on the radio." In the context of Finnish telecommunications and spectrum management, it describes the status of a radio frequency, channel, or band that is currently allocated to and being used by a radio service. The phrase is used in regulatory documents, frequency allocation tables, and informational maps to indicate that the resource is not freely available for new assignments without coordination.

The concept covers a range of services, including broadcasting, mobile and fixed wireless, public safety, amateur radio, maritime and aviation, as well as industrial, scientific, and medical applications. A frequency marked as radiokäytössä may be part of a license holder’s data, signaling active use and ongoing regulatory control. This designation helps prevent interference by signaling that additional transmissions or changes require notice, coordination, or a permit.

In operational contexts, radiokäytössä can also appear on radio equipment panels or status displays to indicate that the device’s transmitter is active or that the unit is currently using the radio spectrum. The concept underlines the importance of proper spectrum management, licensing, and coordination to maintain reliable communications and minimize interference.

See also: spectrum management, frequency allocation, licensing, interference prevention, Traficom (the Finnish Transport and Communications Agency).