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G3C10
What is near vertical incidence skywave (NVIS) propagation?
Pick an answer to check it.
Answer: B. Short distance MF or HF propagation at high elevation angles
NVIS sends MF or HF signals nearly straight up at high elevation angles so they come back down close by. It provides short-distance coverage, for example a few hundred miles, with no skip zone.
Tip: NVIS: straight up, nearby down.