CONTENTS

RECOMMENDATION  ITU-R  F.1820     1
Power flux-density at international borders for high altitude platform stations providing fixed wireless access services to protect the fixed service in neighbouring countries in the 47.2-47.5 GHz        and 47.9-48.2 GHz bands     1
Scope     1
Annex 1     2
Methodology to determine pfd values at international borders for HAPS providing fixed wireless access services to protect the fixed service in neighbouring countries in the 47.2-47.5 GHz and        47.9-48.2 GHz bands     2
1 Introduction  2
2 System characteristics  2
        2.1 The high altitude platform system   2
        2.2     Antenna radiation patterns  3
        2.3 Atmospheric attenuation  3
        2.4 Interference scenario  3
3 Proposed HAPS pfd limit at international borders to protect fixed service  10