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diff --git a/1619/CH2/EX2.2.7/Example2_2_7.sce b/1619/CH2/EX2.2.7/Example2_2_7.sce
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+//Example 2.2.7 page 2.9

+

+clc;

+clear;

+z= 10;

+p0= 100*10^-6;  // input power

+pz=5*10^-6;     //output power

+alpha = 10*log10(p0/pz);    //total attenuation

+printf("The overall signal attenuation is %.2f dB",alpha);

+alpha = alpha/z;    // attenuation per km

+printf("\n\nThe attenuation per Km is %.2f dB/Km",alpha);

+z_new = 12;

+splice_attenuation = 11*0.5;

+cable_attenuation = alpha*z_new;

+total_attenuation = splice_attenuation+cable_attenuation;

+printf("\n\nThe overall signal attenuation for 12Kms is %.1f dB",total_attenuation);