CONTENTS

ANNEX  1
 1     Aeronautical systems
 2     Space-based distress alerting and location systems
        2.1     Cospas-Sarsat protection requirements
ANNEX  2
 1     Practical hardware and system measures to be considered at an early stage in the design of systems in order to reduce interference from unwanted emissions
 2     Traffic loading management
 3     Band utilization
 4     Guard channels
 5     Monitoring
 6     Transmit inhibit
ANNEX  3
 1     Receiver architecture
 2     Site-shielding
 3     Operational measures
 4     Error correction and interleaving
 5     Frequency diversity
 6     Space diversity
 7     Beam down-tilt
 8     Antenna pattern
 9     Signal processing (radar)
10     RF filtering
11     Time division multiple access (TDMA)/ frequency division multiple access (FDMA) systems
12     Digitally coded squelch (DCS)/continuous tone control signalling system (CTCSS)
13     Monitoring
14     Traffic loading management
15     Adaptive power control
ANNEX  4
ANNEX  5
 1     Introduction
 2     Specific factors
ANNEX  6
 1     Background
 2     Aeronautical and non‑aeronautical sources of harmful interference
 3     Shared allocations
 4     Aeronautical radiocommunication systems
        4.1     Non-directional beacons (NDB) (LF/MF)
        4.2     HF and VHF digital data interchange and analogue radiotelephony
        4.3     VOR
        4.4     VHF emergency frequencies
        4.5     ILS (VHF and UHF)
        4.6     DME (UHF)
        4.7     Global navigation satellite system (GNSS)
        4.8     MLS
        4.9     Radars