Basic Qualification · B-003 Station assembly, practice and safety · B-003-019-008
Où devrait être raccordé la borne de mise à la terre de chaque appareil de la station?
- AÀ la mise à la terre du système d'antenne
- BEn chaine avec les appareils adjacents
- CAu point de terre central de la station
- DÀ des électrodes de terre distinctes
Correct answer: C — Au point de terre central de la station. Question tirée de la banque officielle d'ISDE.
Why
A common-mode choke stops unwanted radio frequency current from flowing along the outside of your coaxial cable, which is what causes the distorted audio and noise in your speaker. 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