Basic Qualification · B-003 Station assembly, practice and safety · B-003-021-001
What should you do for safety when operating at UHF and microwave frequencies?
- AMake sure the standing wave ratio is low before you conduct a test
- BNever use a horizontally polarized antenna
- CKeep antenna away from your eyes when RF is applied
- DMake sure that an RF leakage filter is installed at the antenna feed point
Correct answer: C — Keep antenna away from your eyes when RF is applied. From the official ISED question bank, verified word for word.
Why
At UHF and microwave frequencies, radio waves can be absorbed by the body, and the eyes are especially vulnerable because they cannot feel the heat until damage is done. 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