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Electronics and Communication Engineering - Communication Systems - Discussion

Discussion Forum : Communication Systems - Section 18 (Q.No. 11)
Communication Systems
11.
Some features of RF stage in good radio receivers is
  1. It increases sensitivity by providing amplification to RF signal
  2. It eliminates image frequency interference
  3. It increases selectivity
  4. It reduces noise level
Which of the above are true?
1, 2 and 3 only
1, 2 and 4 only
2, 3, 4 only
1, 2, 3, 4
Answer: Option
Explanation:
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