1、QUESTION ITU-R 242/5*Reference radiation patterns of omnidirectional and sectoral antennas inpoint-to-multipoint systems for use in sharing studies(1995-2000)The ITU Radiocommunication Assembly,consideringa) that determination of criteria for frequency sharing between point-to-multipoint systems int
2、he fixed service and systems in other services requires a knowledge of radiation patterns ofomnidirectional and sectoral antennas along all possible interfering paths;b) that the use of reference radiation patterns for omnidirectional and sectoral antennas wouldfacilitate interference calculations;c
3、) that different reference radiation patterns may be required for the various types of antennasin use,decides that the following Questions should be studied:1 What are the measured radiation patterns in the vertical and horizontal planes for bothpolarizations of typical omnidirectional and sectoral antennas used in point-to-multipoint systems?2 What reference radiation patterns can be defined for the different types of antennas?NOTE 1 See Recommendation ITU-R F.1336._* Former Question ITU-R 202-1/9.
