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+//Chapter 7, Example 7.11, page 333
+clc
+
+//Initialisation
+kq=2.6*10**-6                                 //geoclimatic coefficient
+f=6                                           //frequency in GHz
+d=45                                          //distance in Km
+gc=0.098                                      //GC factor
+ab=0.25                                       //geoclimatic factor
+
+//Calculation
+po=kq*f*gc*d**3                              //In country
+po1=0.3*ab*(f*4**-1)*(d*50**-1)**3           //In mountainous area
+
+
+
+//Results
+printf("Fading occurrence probability")
+printf("\n(1) In country = %.2f",po)
+printf("\n(2) In mountainous area = %.3f",po1)