| Introduction |
Introduction |
| Elements of a Communication System |
Block diagram of generalized communication system |
| Basic Terminologies Used in Electronic Communications Systems |
Transducer, Signal, Noise, Transmitter, Receiver, Attenuation, Amplification, Range, Bandwidth, Modulation, Demodulation, Repeater |
| Bandwidth of Signals |
Mention of bandwidth of signals for speech, TV and digital data |
| Bandwidth of Transmission Medium |
Mention of bandwidth of transmission medium for coaxial cable, free space and optical fibres |
| Propagation of Electromagnetic Waves |
Brief explanation of ground wave, sky wave and space wave |
| Modulation and its Necessity |
Need for Modulation |
| Amplitude Modulation |
Amplitude modulation: Meaning |
| Production of Amplitude Modulated Wave |
Block diagram of AM transmitter. |
| Detection of Amplitude Modulated Wave |
Block diagram of AM receiver. |
