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8.1 The Basic Electronic Communications System
Communication System Block Diagram
Transducers, Modulators, Amplifiers, Transmission Links
8.2 Transducers
Solenoids
Relays
Microphones
Speakers
Other Transducers
8.3 Amplification
Amplifiers
Noise and Distortion
Linearity
Feedback
Frequency Response
Signal-to-Noise Ratio
Types of Wireless Communication Systems
Spectrum
Concept of a Carrier
Frequency Allocations
8.5 Amplitude Modulation (AM) Systems
Block Diagram
Transmitter
Receiver
Advantages and Disadvantages
Noise
8.6 Frequency Modulated (FM) Systems
Block Diagram
Transmitter
Receiver
Advantages and Disadvantages
Improved Power and Noise Performance
8.7 Digital Communications Systems
Inherent Noise Immunity
Block Diagram
8.8 An Introduction to Wireless Components
Antenna Ground System
The Tuner
Demodulation
Restoring the Audio Information
8.9 Multiplexed Communications
A Word on 'Bandwidth'
Time-Multiplexed Systems
TDM System Components
TDM Example
Frequency-Multiplexed Systems
FDM System Components
FDM Example
A Comparison of TDM versus FDM
8.9 Problems