Basic Qualification · B-003 Station assembly, practice and safety · B-003-014-008
Dans un récepteur, quel dispositif de gestion du bruit reconnaît les impulsions de courte durée et de forte amplitude pour les supprimer?
- AUn suppresseur de bruit (antiparasite)
- BUn limiteur de bruit
- CLa commande automatique de niveau
- DUn filtre à bande étroite
Correct answer: A — Un suppresseur de bruit (antiparasite). Question tirée de la banque officielle d'ISDE.
Why
A noise blanker is designed to spot and silence those sharp, loud bursts of static that last only a tiny fraction of a second, such as sparks from a car ignition or power line arcing. 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