Basic Qualification · B-003 Station assembly, practice and safety · B-003-011-008
What frequency components are present in the bandwidth of an amplitude modulated signal?
- A One sideband
- B Carrier and one sideband
- C Carrier and two sidebands
- D Two sidebands
Correct answer: C — Carrier and two sidebands. From the official ISED question bank, verified word for word.
Why
An amplitude modulated signal always contains the original carrier frequency plus two sidebands, one above and one below the carrier, which carry the actual 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.