Question
What happens to KNX RF signals around metallic objects?
Answer
D — They are shielded or reflected, creating a radio shadow on the reverse side where direct reception is not possible
Correct: metallic objects shield/reflect signals and produce radio shadows behind them.
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An error or unclear wording? Report this questionAll proposed choices (exam context)
- A.Metal has no effect on 868 MHz signals
- B.Metal always amplifies the signal
- C.Metal converts the signal to a lower frequency
- D.They are shielded or reflected, creating a radio shadow on the reverse side where direct reception is not possible✓
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