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?
- A Make sure the standing wave ratio is low before you conduct a test
- B Never use a horizontally polarized antenna
- C Keep antenna away from your eyes when RF is applied
- D Make 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
Building a station safely: power supplies, grounding, RF exposure, lightning, feedline routing, and what a transmitter, receiver and transceiver actually do.