Basic Qualification · B-003 Station assembly, practice and safety · B-003-001-008
In an HF station, right after which component is the SWR meter inserted?
- A The antenna switch
- B The low-pass filter
- C The last stage of RF amplification
- D The antenna tuner
Correct answer: B — The low-pass filter. From the official ISED question bank, verified word for word.
Why
The low-pass filter belongs right before the SWR meter so the meter reads only the signal heading to the antenna, free from unwanted high-frequency noise that the filter removes. 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.