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?
- AOne sideband
- BCarrier and one sideband
- CCarrier and two sidebands
- DTwo 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
Station assembly, practice and safety is section B-003 of the Basic exam: Building a station safely: power supplies, grounding, RF exposure, lightning, feedline routing, and what a transmitter, receiver and transceiver actually do.
Drill B-003 — free, no account