Basic Qualification · B-003 Station assembly, practice and safety · B-003-009-001
Which component of a 3-element Yagi antenna is primarily for mechanical support?
- A The reflector
- B The driven element
- C The director
- D The boom
Correct answer: D — The boom. From the official ISED question bank, verified word for word.
Why
The boom is the long metal bar that runs through the centre of the antenna, holding the reflector, driven element, and director in place so the whole structure stays rigid and aligned. 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.