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Հարց 145

At what time of day is transequatorial propagation most likely to occur?

  1. Morning
  2. Noon
  3. Afternoon or early eveningՃիշտ պատասխան
  4. Late at night

Բացատրություն

The equatorial ionization anomaly is built up by daytime electric fields and reaches its strongest, most usable form after local noon, so transequatorial openings belong to the afternoon and early evening. In the morning the crests have not yet formed, and late at night recombination has dissolved them.

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Հարց 145: At what time of day is transequatorial propagation most… · FCC Amateur Extra Class (Element 4) · Questena