Basic Qualification · B-003 Station assembly, practice and safety · B-003-001-006
Dans une station HF, quel dispositif pourrait permettre d'utiliser une antenne sur une bande pour laquelle elle n'est pas conçue?
- AUn filtre passe-bas
- BUn filtre passe-haut
- CUn ROS-mètre
- DUn bloc d'accord d'antenne
Correct answer: D — Un bloc d'accord d'antenne. Question tirée de la banque officielle d'ISDE.
Why
An antenna tuner matches the radio's output to the antenna's electrical needs, allowing you to safely transmit on bands the antenna was not originally built for by correcting the impedance mismatch. 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