ITU R F 240:2006
ITU R F 240:2006 Signal-to-interference Protection Ratios For Various Classes Of Emission In The Fixed Service Below About 30 Mhz
Table of Contents
Annex1-MeasurementofprotectionratiosforJ3Eemission1Introduction
2Measurement
2.1Measurementprinciple
2.2Interferingsignals
2.3Measurementmethod
2.3.1Testspeechsamplesandsendingorder
2.3.2Meanopinionscore(MOS)
2.3.3Listeningconditions
2.3.4SettingofS/NratioandS/Iratio
2.3.5Determinationofsendingorderofspeechsamples
3Measurementresults
3.1MOSversusS/Nratio
3.2MOSversusS/Iratio
4Considerations
4.1MOS
4.2Protectionratios
Annex2-Conversionfactorsforderivingtheprotection
ratios
1Introduction
2Calculationofprotectionratios
2.1Calculationmethod
2.2J3Eemission
2.3R3E,H3EandA3Eemissions
2.4B8Eemission
3Assumptionsforconversionfactors
3.1J3Eemission
3.2R3Eemission
3.3H3Eemission
3.4A3Eemission
3.5B8Eemission
3.6Meanpowerofspeechsignal
Annex3-Measurementofprotectionratiosandminimum
necessaryfrequencyseparationforclassof
emissionJ7B
1Introduction
2Experiment
2.1Measurementofprotectionratios
2.2Determinationofminimumfrequencyseparation
2.3Measurementsofmultiplexmode2AT
3Conclusions