Basic Qualification · B-003 Station assembly, practice and safety · B-003-002-007
Dans un émetteur FM, quel étage consomme le plus d'énergie électrique?
- ALe multiplicateur de fréquence
- BL'oscillateur
- CL'amplificateur microphonique
- DL'amplificateur de puissance
Correct answer: D — L'amplificateur de puissance. Question tirée de la banque officielle d'ISDE.
Why
The Power amplifier is the stage that draws the most electric power because its specific job is to boost the weak radio signal up to a high level strong enough to be sent out through the antenna. 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