THE INTERNATIONAL TELECOMMUNICATION UNION The ITU Radiocommunication Sector specializes in facilitating international collaboration to ensure the rational, equitable, efficient and economical use of the radio-frequency spectrum and satellite orbits by holding World and Regional Radiocommunication Conferences to expand and adopt Radio Regulations and Regional Agreements covering the use of the radio-frequency spectrum; establishing ITU-R Recommendations, developed by ITU-R Study Groups, on the technical characteristics and operational procedures for radiocommunications services and systems; coordinating endeavors to eliminate harmful interference between radio stations of different countries; maintaining the Master International Frequency Register; and offering tools, information and seminars to assist national radio-frequency spectrum management.
...keeping the tutorial character of the previous edition, if takes into account the evolution of techniques and technologies... ( SciTech Book News Vol. 26, No. 2, June 2002)