Basic Qualification · B-003 Station assembly, practice and safety · B-003-013-008
Quel type de modulation ressemble le plus à la modulation de fréquence?
- AUne modulation de phase
- BUne modulation en multiplex
- CUne modulation en amplitude
- DUne modulation par impulsions
Correct answer: A — Une modulation de phase. Question tirée de la banque officielle d'ISDE.
Why
Phase modulation is the correct choice because it changes the timing of the radio wave's peaks, which is a property closely linked to how frequency modulation shifts the wave's speed. 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