RECOMMENDATION ITU-R SM.1140-0 TEST PROCEDURES FOR MEASURING AERONAUTICAL RECEIVER CHARACTERISTICS USED FOR DETERMINING COMPATIBILITY BETWEEN THE SOUND-BROADCASTING SERVICE IN THE BAND OF ABOUT 87-108 MHz AND THE AERONAUTICAL SERVICES IN THE BAND 108-118 MHz
Scope
ANNEX 1
1 Background and introduction
2 Interference mechanisms
     2.1 Type A interference
          2.1.1 Introduction
          2.1.2 Type A1 interference
          2.1.3 Type A2 interference
     2.2 Type B interference
          2.2.1 Introduction
          2.2.2 Type B1 interference
          2.2.3 Type B2 interference
3 Signal characteristics
     3.1 ILS signal characteristics
     3.2 VOR signal characteristics
     3.3 FM broadcasting signal characteristics
4 Test set-up
     4.1 Overview of test set-up
     4.2 Test set-up description
     4.3 Test precautions
     4.4 Test equipment
5 Measurement techniques
     5.1 FM test conditions
     5.2 Test results
     5.3 ILS localizer receiver test procedures
          5.3.1 Interference thresholds
               5.3.1.1 With a localizer signal
               5.3.1.2 With no localizer signal
               5.3.1.3 Localizer test conditions
          5.3.2 Particulars for Type A1 transmitter interference test
          5.3.3 Particulars for Type A2 interference test
          5.3.4 Particulars for Type B1 interference test
               5.3.4.1 Intermodulation product coincident with localizer frequency
               5.3.4.2 Intermodulation product off-set from localizer frequency
          5.3.5 Particulars for Type B2 interference test
     5.4 VOR receiver test procedures
          5.4.1 Interference thresholds
               5.4.1.1 With a VOR signal
               5.4.1.2 With no VOR signal
               5.4.1.3 VOR test conditions
          5.4.2 Particulars for Type A1 transmitter interference test
          5.4.3 Particulars for Type A2 interference test
          5.4.4 Particulars for Type B1 interference test
               5.4.4.1 Intermodulation product coincident with VOR frequency
               5.4.4.2 Intermodulation product off-set from VOR frequency
          5.4.5 Particulars for Type B2 interference test
               Course deflection current
               DDM (Difference in Depth of Modulation)
               ICAO Annex 10
               Instrument Landing System
               ILS localizer
               VHF omnidirectional range (VOR)
APPENDIX 1 TO ANNEX 1
APPENDIX 2 TO ANNEX 1