1 With the aid of a block diagram describe an FM Transmitter
2
3
Describe how signals are generated and transmitter by a Radio broadcasting station
Calculate the wave length in centimeter of an antenna radiating with a frequency of 5GHz
4 Explain with the aid of block diagram how the colour signal is being generated at the
transmitter?
4
What are the conditions required for choosing antenna
5
define the following terms: (a) Decibels (b) Directivity (c) Radiation patterns (d)
Wavelength
6
What do you understand by radio wave propagation?
7
Differentiate between sky wave and ground wave
8
What are the different things happening in troposphere and ionosphere regions of the
atmosphere
9
10
11
12
13
Sketch the block diagram of a monochrome TV receiver and explain the functions of three
(3) blocks of the diagram
What do you understand by PAL system?
Explain how telephone came to an existence
Sketch the block diagram of a monochrome TV transmitter and explain the functions of three
blocks of the diagram
Briefly explain the following
Collinear antenna
1/2 wave antenna
5/8 wave antenna
loaded 1/4 wave
antenna
14 State the frequency characteristic of ground wave
15 Explain mode of operation of an antenna at the receiver and the transmitter site
16 Explain with the aid of block diagram how the colour signal is being produced at the TV
receiver
17 Briefly explain the following in accordance with the radio wave
i
Diffraction
ii
Reflection
iii
Refraction