Basic Qualification · B-003 Station assembly, practice and safety · B-003-010-005
For which of the following emission modes is it important for the receiver to be tuned accurately (within 100 Hz)?
- A FM
- B CW
- C SSB
- D AM
Correct answer: C — SSB. From the official ISED question bank, verified word for word.
Why
SSB, or single sideband, strips away the carrier wave and one side of the audio signal, leaving only a narrow slice of information. The full explanation — and one for every question — is in Pro.
Practise this section
Building a station safely: power supplies, grounding, RF exposure, lightning, feedline routing, and what a transmitter, receiver and transceiver actually do.