Page 321 - Physics Coursebook 2015 (A level)

Learning outcomes
You should be able to:
■■ understand amplitude and frequency modulation and comment on the relative advantages of AM and FM transmission
■■ describe digital transmission systems in terms of analogue-to-digital (ADC) and digital-to-analogue (DAC) conversion and sampling rate
■■ describe and compare different networks or channels of communication
■■ calculate signal attenuation in dB and dB per unit length
Chapter 20:
Communications systems
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