Basic Qualification · B-007 Radio wave propagation · B-007-001-006
Quelle portion de l'onde rayonnée subit directement l'influence de la surface de la Terre?
- AL'onde diffusée
- BL'onde de sol
- CL'onde troposphérique
- DL'onde ionosphérique
Correct answer: B — L'onde de sol. Question tirée de la banque officielle d'ISDE.
Why
The ground wave is the part of a radio signal that travels along the surface of the Earth, hugging the ground as it moves from the transmitter to the receiver. The full explanation — and one for every question — is in Pro.
Practise this section
Radio wave propagation is section B-007 of the Basic exam: How signals travel: the ionosphere and its layers, skip, ground wave, sporadic E, and which bands work when.
Drill B-007 — free, no account