ITU Radio Regulations

The ITU Radio Regulations (short: RR) regulates on law of nations scale radiocommunication services and the utilisation of radio frequencies. It is the supplementation to the Constitution and Convention of the International Telecommunication Union (ITU Constitution and Convention). In line to the ITU Constitution and Convention and the ITU International Telecommunication Regulations (ITR), this ITU Radio Regulations belong to the basic documents of the International Telecommunication Union. The ITU Radio Regulations comprise and regulate the part of the allocated electromagnetic spectrum (also: radio frequency spectrum) from 9 kHz to 275 GHz.
Structure.
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
Definitions.
The "Radio Regulations" define:
The drafting, revision and adoption of the "Radio Regulations" is the responsibility of the World Radiocommunication Conferences (WRCs) of the ITU, meetings of which are typically held every three or four years.
Recent WRCs are:
The most recent published version of the "Radio Regulations", the "Edition of 2016" 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").
The "Edition of 2020", adopted and reviewed by the WRC-19, is scheduled for publication in October 2020.