Which of the following reduces the likelihood of receiver desensitization?
Insert attenuation before the first RF stage✓پاسخ درست
Raise the receiver’s IF frequency
Increase the receiver’s front-end gain
Switch from fast AGC to slow AGC
توضیح
Attenuation ahead of the first RF stage lowers the offending strong signal to a level that stage can handle linearly, at the cost of an equal reduction in the wanted signal. Increasing front-end gain makes the problem worse, raising the IF addresses image responses instead, and AGC timing does not change a stage's linear range.