RECOMMENDATION ITU-R S.733-2 … DETERMINATION OF THE G/T RATIO FOR EARTH STATIONS OPERATING IN THE FIXED-SATELLITE SERVICE
ANNEX 1 … Measurement of the  ratio with the aid of radio stars 
1 Introduction 
2  Method of measurement 
3  Suitable radio stars 
4  Correction factors  
    4.1  Angular extension of radio stars 
    4.2  Change of flux with time 
    4.3  Polarization effects 
5  Limitations of the radio star method 
APPENDIX 1 TO ANNEX 1 … Contributions to the noise temperature of an  earth-station receiving antenna 
1 Introduction 
2 Measuring equipment 
3  Results of measurements 
ANNEX 2 … Measurement of the  ratio with a signal from a geostationary satellite 
1 Introduction 
2  Method of measurement 
3  Limitations of the method 
ANNEX 3 … Method of determining earth-station antenna characteristics  at frequencies above 10 GHz 
1 Introduction 
2  Specification of the figure of merit 
3 Calculation model 
4 Sample calculation 
    4.1 Assumptions 
    4.2 Calculation results