Basic Qualification · B-003 Station assembly, practice and safety · B-003-021-002

What should you do for safety if you put up a UHF transmitting antenna?

  1. A Make sure that RF field screens are in place
  2. B Make sure the antenna will be in a place where no one can get near it when you are transmitting
  3. C Make sure the antenna is near the ground to keep its RF energy pointing in the correct direction
  4. D Make sure you connect an RF leakage filter at the antenna feed point

Correct answer: B — Make sure the antenna will be in a place where no one can get near it when you are transmitting. From the official ISED question bank, verified word for word.

Why

UHF radio waves can heat body tissue if you stand too close to an active antenna, so the safest rule is to ensure the antenna is mounted where people cannot touch it while you are transmitting. 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.

Drill B-003 — free, no account · All B-003 questions