PUBLICATIONS OF THE ITU-R SECTOR 2. Edition de 2001 This fascicle contains reprints of selected parts of the Radio Regulations, and ITU-R Questions, Recommendations and a Report concerning the amateur and amateur-satellite services. It is intended to concentrate in one volume all ITU texts concerning these services. It will be useful for national services in charge of radio-frequency spectrum management. It is also intended for radio amateurs wishing to keep abreast of the status of the amateur services from the standpoint of the Radio Regulations and Recommendations in force. MEDIA PRICE CHF LANGUAGE ARTICLE ISBN PAGE NBR EFS 20239 20240 20241 92-61-09411-2 92-61-09412-0 92-61-09413-9 25.- EFS 25.- 25.- E, F, S 20242 2.5 ITU-R Recommendations 37 The ITU-R Recommendations constitute a set of international technical standards developed by the Radiocomunication Sector (formerly CCIR) of the ITU. They are the result of studies undertaken by Radiocommunication Study Groups on: - the use of a vast range of wireless services, including popular new mobile communication technologies: - the management of the radio-frequency spectrum and satellite orbits; - the efficient use of the radio-frequency spectrum by all radiocommunication services; - terrestrial and satellite radiocommunication broadcasting; - radiowave propagation; - systems and networks for the fixed-satellite service, for the fixed service and the mobile service; - space operation, Earth exploration-satellite, meteorological-satellite and radio astronomy services. The ITU-R Recommendations are approved by ITU Member States. Their implementation is not mandatory; however, as they are developed by experts from administrations, operators, the industry and other organizations dealing with radiocommunication matters from all over the world, they enjoy a high reputation and are implemented worldwide. (*Free online access to current ITU-R Recommendations is provided on a trial basis to ITU Member States administrations, Sector Members and Associates of all Sectors via TIES until further notice.) They are divided into Series according to the subjects they cover, as follows: Series Subject area BO Satellite delivery BR Recording for production, archival and play-out; film for television BS Broadcasting service (sound) BT Broadcasting service (television) F Fixed service M Mobile, radiodetermination, amateur and related satellite services P Radiowave propagation RA Radioastronomy