What is an undesirable effect of using too wide a filter bandwidth in the IF section of a receiver?

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Multiple Choice

What is an undesirable effect of using too wide a filter bandwidth in the IF section of a receiver?

The main concept is selectivity in the receiver’s IF stage. The IF filter is meant to pass the desired signal while rejecting nearby signals. If the bandwidth is made too wide, adjacent channels and other unwanted signals aren’t suppressed and can travel through to the detector and then into the audio stage. That means those undesired signals become audible, degrading reception with interference rather than clean audio. While widening bandwidth does increase the amount of noise reaching the detector, the defining problem here is the loss of selectivity that lets other signals through. Other options describe issues that aren’t the direct consequence of a too-wide IF filter in the receiver path.

The main concept is selectivity in the receiver’s IF stage. The IF filter is meant to pass the desired signal while rejecting nearby signals. If the bandwidth is made too wide, adjacent channels and other unwanted signals aren’t suppressed and can travel through to the detector and then into the audio stage. That means those undesired signals become audible, degrading reception with interference rather than clean audio. While widening bandwidth does increase the amount of noise reaching the detector, the defining problem here is the loss of selectivity that lets other signals through. Other options describe issues that aren’t the direct consequence of a too-wide IF filter in the receiver path.

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