Machine-translated by Google. Questions are authored in English.
Top

Discussion

What is the effect of an intermediate frequency filter narrower than Carson's bandwidth?

  • A.A rise in the transmitted deviation
  • B.Distortion of the recovered audio
  • C.Improved capture performance
  • D.Loss of the carrier only

Answer: B

Clipping the sidebands distorts the frequency variation the discriminator reads, so the recovered audio is distorted, worst on loud passages where the deviation is greatest. Capture performance is not improved by mutilating the wanted signal. The carrier sits in the middle of the passband and survives. And nothing a receiver does changes the transmitted deviation. This is the receiver-side counterpart of over-deviation at the transmitter, and both show up as distortion on peaks.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.