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+clc
+//Chapter10
+//Example10.1
+//Given
+Pt1=100//Radiated power
+Pt2=30// Reduced Power
+r=1//assume distance to be unity for easeof calculation
+E1=300*sqrt(100)/r
+E2=300*sqrt(30)/r
+E=20*log10((E2/E1))// Reduction in field strength in dBs
+mprintf('Field strength will reduce by %f dBs',-E)
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