The International Telecommunications Union Radiocommunications Sector (ITU-R) is one of the three Sectors of the ITU. The ITU is the United Nations specialized agency in the field of telecommunications. The ITU-R is responsible for the international management of the radio frequency spectrum and satellite orbits.

The main tasks of the ITU-R are:

The allocation of frequency bands to radio services is laid down in the Radio Regulations.

The work programme, the studies and resulting ITU-R Recommendations are approved at a Radiocommunicatons Assembly (RA). A RA is held every three to four years, usually prior to a World Radio Conference (WRC).

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