Basic Qualification · B-003 Station assembly, practice and safety · B-003-014-008
In a receiver, what noise management circuit recognizes high-amplitude short-duration pulses and removes them?
- A Noise blanker
- B Noise limiter
- C Automatic level control
- D Narrowband filter
Correct answer: A — Noise blanker. From the official ISED question bank, verified word for word.
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
Building a station safely: power supplies, grounding, RF exposure, lightning, feedline routing, and what a transmitter, receiver and transceiver actually do.