Basic Qualification · B-003 Station assembly, practice and safety · B-003-012-007
What does overmodulation do to a single-sideband signal?
- A It has higher fidelity and an improved signal-to-noise ratio
- B It becomes distorted and occupies more bandwidth
- C It increases the range of your signal
- D It occupies less bandwidth and has a poor high frequency response
Correct answer: B — It becomes distorted and occupies more bandwidth. From the official ISED question bank, verified word for word.
Why
When you push a single-sideband signal too hard, the audio peaks get chopped off, creating a harsh, distorted sound that sounds like a robot talking. 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.