6 files changed, 80 insertions, 0 deletions
diff --git a/3769/CH29/EX29.1/Ex29_1.sce b/3769/CH29/EX29.1/Ex29_1.sce
new file mode 100644
index 000000000..3a9a76091
--- /dev/null
+++ b/3769/CH29/EX29.1/Ex29_1.sce
@@ -0,0 +1,18 @@
+clear
+c=3*10**8
+f=30.0*10**6
+f1=300*10**6
+f2=3000*10**6
+
+//Calculation
+l=c/f
+l1=l/2.0
+l2=c/f1
+l3=l2/2.0
+l4=c/f2
+l5=l4/2.0
+
+//Result
+printf("\n (i) length of half wave dipole antenna at 30 MHz is %0.3f  m",l1)
+printf("\n (ii) length of half wave dipole antenna at 300 MHz is %0.3f  m",l3)
+printf("\n (iii) length of half wave dipole antenna at 3000 MHz is %0.3f  m",15)
diff --git a/3769/CH29/EX29.14/Ex29_14.sce b/3769/CH29/EX29.14/Ex29_14.sce
new file mode 100644
index 000000000..277ea3167
--- /dev/null
+++ b/3769/CH29/EX29.14/Ex29_14.sce
@@ -0,0 +1,14 @@
+clear
+//Given
+h=300
+R=6.4*10**6                       //m
+N=10**12
+
+//Calculation
+//
+d=sqrt(2*R*h)
+fc=9*N**0.5
+
+//Result
+printf("\n fc= %0.3f  MHz", fc*10**-6)
+printf("\n 5 MHz comes via ionospheric propogation.and 100 MHz signal comes via satellite transmission.")
diff --git a/3769/CH29/EX29.6/Ex29_6.sce b/3769/CH29/EX29.6/Ex29_6.sce
new file mode 100644
index 000000000..a023bc98d
--- /dev/null
+++ b/3769/CH29/EX29.6/Ex29_6.sce
@@ -0,0 +1,11 @@
+clear
+//Given
+Pc=500               //watts
+
+//Calculation
+Ps=(1/2.0)*(Pc)
+Pt=Pc+Ps
+
+//Result
+printf("\n (i) sideband power is %0.3f  W",Ps)
+printf("\n (ii) power of AM wave is %0.3f  W",Pt)
diff --git a/3769/CH29/EX29.7/Ex29_7.sce b/3769/CH29/EX29.7/Ex29_7.sce
new file mode 100644
index 000000000..d25dc4bf6
--- /dev/null
+++ b/3769/CH29/EX29.7/Ex29_7.sce
@@ -0,0 +1,13 @@
+clear
+//Given
+Pc=50
+Ma=0.8
+Ma1=0.1
+
+//Calculation
+Ps=(1/2.0)*Ma**2*Pc
+Ps1=(1/2.0)*Ma1**2*Pc
+
+//Result
+printf("\n total sideband at 80percentageis %0.3f  KW",Ps)
+printf("\n total sideband at 10percentageis %0.3f  KW",Ps1)
diff --git a/3769/CH29/EX29.8/Ex29_8.sce b/3769/CH29/EX29.8/Ex29_8.sce
new file mode 100644
index 000000000..512a28409
--- /dev/null
+++ b/3769/CH29/EX29.8/Ex29_8.sce
@@ -0,0 +1,13 @@
+clear
+//Given
+Fc=500                   //KHz
+Fs=1                     //KHz
+
+//Calculation
+A1=Fc+Fs
+A2=Fc-Fs
+B=A1-A2
+
+//Result
+printf("\n sideband frequancies are %0.3f KHz and %0.3f KHz",A1,A2)
+printf("\n bandwidth required is %0.3f  KHz",B)
diff --git a/3769/CH29/EX29.9/Ex29_9.sce b/3769/CH29/EX29.9/Ex29_9.sce
new file mode 100644
index 000000000..b9629795b
--- /dev/null
+++ b/3769/CH29/EX29.9/Ex29_9.sce
@@ -0,0 +1,11 @@
+clear
+//Given
+F=10**10                //Hz
+D=8*10**3               //Hz
+
+//Calculation
+B=2/100.0*10**10
+C=B/D
+
+//Result
+printf("\n No. of telephones channels are %0.3f  10**4",C*10**-4)