Amateur Extra › E4 Amateur Practices › E4C09
E4C09
Which of the following choices is a good reason for selecting a high IF for a superheterodyne HF or VHF communications receiver?
Pick an answer to check it.
Answer: C. Easier for front-end circuitry to eliminate image responses
A high IF puts the image frequency far from the desired signal (twice the IF away). That makes it easy for front-end filters to reject images.
Tip: High IF pushes images far away.