1. Allocation tables - International call sign series (Appendix 42 of the Radio Regulations), Blocks of coast station identification numbers, Blocks of selective call numbers for ship stations and ...

One of the most important inventions of the twentieth century was broadcasting with analogue radio and television systems. The last few years, however, have seen the birth of digital broadcasting.

ITU-R administrative circulars and circular letters, including invitations to participate in ITU events, are available in electronic form on the ITU website. Click here for ITU-R administrative ...

Celebrate ITU’s 160th Anniversary with our special Light Show on WTISD. Tune in on May 17 via different channels: We use cookies on our website to give you the most relevant experience by remembering ...

Unless specified otherwise, registration to ITU-R events requires the approval of the corresponding Designated Focal Points (DFP) for ITU-R event registration. Read more on registration to ITU-R ...

ITU's Headquarters in Geneva (Place des Nations, 1211 Geneva 20, Switzerland) are conveni ently located overlooking the Place des Nations in the Heart of Geneva's United Nations district. Access is ...

“Internet governance is the development and application by governments, the private sector and civil society, in their respective roles, of shared principles, norms, rules, decision-making procedures, ...

Thousands of telecommunication professionals trace the beginnings of their careers to the exploration of the radio spectrum that was made possible by their early involvement in amateur radio. Many ...

The Manual for Use by the Maritime Mobile and Maritime Mobile-Satellite Services is published in accordance with Article 20 (No. 20.14) of the Radio Regulations and results from studies carried out in ...

On 17 May, World Telecommunication and Information Society Day, ITU marked 160 years of technology for humanity with a light show at the Place des Nations in Geneva — also streamed live on ITU’s ...