Basic Qualification · B-003 Station assembly, practice and safety · B-003-001-004
Which component in an HF station is used to determine if the antenna system impedance is matched to the transmitter?
- A SWR meter
- B Frequency meter
- C Multimeter
- D S-meter
Correct answer: A — SWR meter. From the official ISED question bank, verified word for word.
Why
An SWR meter measures standing wave ratio, which tells you how well your antenna's resistance matches the transmitter's output so energy flows out instead of bouncing back. 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.