Extra exam question E4C14
Subelement E4, AMATEUR PRACTICES· Group E4C
What is the purpose of the receiver IF Shift control?
- A.To permit listening on a different frequency from the transmitting frequency
- B.To change frequency rapidly
- C.To reduce interference from stations transmitting on adjacent frequencies (correct answer)
- D.To tune in stations slightly off frequency without changing the transmit frequency
WhyThe receiver IF Shift control reduces interference from stations transmitting on adjacent frequencies. The IF Shift control lets an operator shift the receiver's passband relative to a fixed transmit frequency, reducing interference from a station transmitting on an adjacent frequency by moving that interfering signal toward the edge, or entirely outside, of the receiver's filter passband, answer C. It doesn't let you receive on a different frequency than you transmit, doesn't retune rapidly, and it isn't the same as a receive incremental tuning control used to tune slightly off-frequency stations without shifting the transmit frequency, that's a related but distinct control.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2024-2028 NCVEC Element 4 pool (public domain); the explanation above is original writing, see our methodology.
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