Basic Qualification · B-003 Station assembly, practice and safety · B-003-010-002
La sensibilité d'un récepteur se définit comme étant:
- Ala largeur de bande de l'étage FI en kilohertz
- Ble nombre d'étages d'amplification RF
- Cle signal RF requis à l'entrée pour obtenir un rapport signal sur bruit spécifié
- Dla puissance de sortie audio en watts
Correct answer: C — le signal RF requis à l'entrée pour obtenir un rapport signal sur bruit spécifié. Question tirée de la banque officielle d'ISDE.
Why
Sensitivity measures how well a receiver can hear very weak signals, which is defined by the smallest radio frequency input signal needed to produce a clear output with a specific signal-to-noise ratio. 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