Annex 1     
 1     Introduction       
 2     Area coverage   
        2.1    
Building
blockage   
        2.2    
Vegetation
attenuation         
        2.3    
General
advice        
 3     Effects of precipitation
on availability         
        3.1    
Simultaneous
area coverage            
        3.2    
Route
diversity improvement           
 4     Propagation channel
distortion       
        4.1    
Frequency
selective vegetation attenuation   
        4.2    
Multipath
from reflections    
 5     Interference