All ITU work in the field of radiocommunications is consolidated in the Radiocommunication Sector (ITU-R), which is charged with reaching consensus on the coherent use of a huge and growing range of wireless services, including the popular new mobile communications technologies. The ITU-R Sector also plays a vital role in the management of the radio-frequency spectrum and satellite orbits, finite natural resources which are increasingly in demand from a large number of services such as fixed, mobile, broadcasting, amateur, space research, meteorology, global positioning systems, environmental monitoring and last but not  least, those communications services that ensure safety of life at sea and in the skies.