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GATE ECE 1995 | Question 1.36

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The image (second) channel selectivity of a super beterodync communication receiver is determined by

  1. antenna and preselector
  2. the preselector and $\text{RF}$ amplifier
  3. the preselector and $\text{IF}$ amplifier
  4. the $\text{RF}$ and $\text{IF}$ amplifier
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