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ALL meanings of f region

f re·gion
F f
  • noun f region the ionospheric region in which the F layer forms. 1
  • noun f region the highest region of the ionosphere, extending from a height of about 150 kilometres to about 1000 kilometres. It contains the highest proportion of free electrons and is the most useful region for long-range radio transmission 0
  • noun f region the highest atmospheric zone within the ionosphere, at an altitude of c. 140 to 400 km (c. 90 to 250 mi), containing the F layers 0
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