The ITU Radio Regulations (RR) is a basic document of the International Telecommunication Union (ITU) that regulates on law of nations scale radiocommunication services and the utilisation of radio frequencies.
The current approved version of the ITU Radio Regulations (addition 2012) is structured as follows: Volume 1 – Articles Volume 2 – Appendices Volume 3 – Resolutions and Recommendations Volume 4 – ITU-R Recommendations incorporated by reference Maps to be used in relation to Appendix 27 The Radio Regulations define: Radio communication services (or sradiocommunication services)[a] are sub-divided into space-based radiocommunication, involving the use of one or more space stations or the use of one or more reflecting satellites or other objects in space; and terrestrial radiocommunication, which excludes space radiocommunication and radio astronomy.
Further sub-sets of some of these internationally defined services are often created at the national level.
The drafting, revision and adoption of the Radio Regulations is the responsibility of the World Radiocommunication Conferences (WRCs) of the ITU,[5] meetings of which are typically held every three or four years.
[6] Recent WRCs are: The most recent published version[15] of the Radio Regulations, the "Edition of 2016"[16] contains the complete texts of the Radio Regulations as adopted and revised by WRC-15, including all articles, appendices, resolutions, and a subset of the recommendations issued by ITU-R (previously known as the CCIR) (those "recommendations" which have a mandatory nature, as a result of being cited in the Radio Regulations).