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//Chapter 3, Example 3.14, page 115
clc
//Initialisation
f1=430 //upper frequency band
f2=410 //lower frequency band
d=80 //distance in meter
//Calculation
Yv=0.1 //Specific attenuation obtained from graph fig 3.34
Lv=Yv*d //loss of forest trees
Am=((f1+f2)/2)**0.5 //maximum value for trees excess loss.
//Results
printf("Specific attenuation index, Yv = %.1f dB/m",Yv)
printf("\nLoss of forest trees, Lv = %.1f dB",Lv)
printf("\nMaximum value for trees excess loss = %.1f dB",Am)
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