BELOW THE INTERFERENCE REGION 



97 



-20 



-30 



-40 



-50 



-60 



-70 



-80 



-90 



-100 



-110 



-120 



-130 



01 23 4567 89 10 II I 



sd - 



Figure 32. Shadow factor Fs, 20 log F^ (evaluating all modes), or 20 log F, 

 20 log Fj /{sdy, is the same as curve in Figure 58. 



2 13 14 15 16 17 18 

 /{sd)- versus'sd. Curve for_ dielectric earth, 



