CONTENTS

Policy on Intellectual Property Right (IPR)     ii
RECOMMENDATION  ITU-R  RS.1263-1     1
Interference criteria for meteorological aids operated in  the 400.15-406 MHz and 1 668.4-1 700 MHz bands     1
Scope     1
Annex 1  Basis for performance and interference criteria  for MetAids in the 400.15-406 MHz and        1 668.4-1 700 MHz bands     3
1 Introduction  3
2 Methodology for calculation of MetAids interference criteria  4
3 Link budget analysis for MetAids  6
 4     Calculation of MetAids interference criteria  8
        4.1     Radiosondes  8
        4.2     Dropsondes  10
        4.3     Rocketsondes  10