AM is used for broadcasting because:
  • it is more noise immune than other modulation system
  • it requires less transmitting power compare with other systems
  • its use avoids receiver complexity
  • No other modulation system can provide the necessary bandwidth faithful transmission
Digital signals:
  • represents values as discrete steps
  • Do not represents values as discrete steps
  • represent values steps
  • represent random steps
Increase in frequency deviation results into:
  • increase in noise of FM receiver
  • decrease in noise of AM receiver
  • increase in noise of Am receiver
  • decrease in noise of FM receiver
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