Radio Regulations
Source: the Radio Regulations published by the International Telecommunication Union (ITU).
ITU-R Recommendations Incorporated by Reference
MandatoryThe ITU-R Recommendations that the Radio Regulations incorporate by reference — and so give treaty-binding force (RR Volume 4). Each links to the RR footnotes, Resolutions and provisions that pull it in.
Technical characteristics of VHF radiotelephone equipment operating in the maritime mobile service in channels spaced by 25 kHz
Operational procedures for the use of direct-printing telegraph equipment in the maritime mobile service
Operational procedures for the use of digital selective-calling equipment in the maritime mobile service
Assignment and use of identities in the maritime mobile service
Transmission characteristics of a satellite emergency position-indicating radio beacon (satellite EPIRB) operating through a satellite system in the 406.0-406.1 MHz band
Technical characteristics of emergency position-indicating radio beacons operating on the carrier frequencies of 121.5 MHz and 243 MHz
Interim solutions for improved efficiency in the use of the band 156-174 MHz by stations in the maritime mobile service
Radiotelephony procedures for routine calls in the maritime mobile service
Miscellaneous abbreviations and signals to be used for radiocommunications in the maritime mobile service
Technical characteristics of single-sideband transmitters used in the maritime mobile service for radiotelephony in the bands between 1 606.5 kHz (1 605 kHz Region 2) and 4 000 kHz and between 4 000 kHz and 27 500 kHz
Technical characteristics of equipment used for on-board vessel communications in the bands between 450 and 470 MHz
A method for the calculation of the potentially affected region for a mobile-satellite service network in the 1-3 GHz range using circular orbits
Interference calculations between non-geostationary mobile-satellite service or radionavigation-satellite service systems and radio astronomy telescope sites
Methodology for assessing the maximum aggregate equivalent power flux-density at an aeronautical radionavigation service station from all radionavigation-satellite service systems operating in the 1 164-1 215 MHz band
Technical and operational requirements for aircraft earth stations of aeronautical mobile-satellite service including those using fixed-satellite service network transponders in the band 14-14.5 GHz (Earth-to-space)
Dynamic frequency selection in wireless access systems including radio local area networks for the purpose of protecting the radiodetermination service in the 5 GHz band
Guideline on technical and operational requirements for stations of the aeronautical mobile (R) service limited to surface application at airports in the frequency band 5 091-5 150 MHz
Technical characteristics of, and protection criteria for non-ICAO aeronautical radionavigation systems, operating around 1 GHz
Source: ITU Radio Regulations, editions of 2008, 2012, 2016, 2020 and 2024. The English, French and Spanish texts are each taken from the official edition in that language, not translated from one another. Sources and citation.