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A dense sporadic E cloud about 100–115 km up returns a 6-meter signal to earth 500 to 1,400 miles away; elsewhere, VHF passes through the normal E layer into space. See Sporadic E.
A dense sporadic E cloud about 100–115 km up returns a 6-meter signal to earth 500 to 1,400 miles away; elsewhere, VHF passes through the normal E layer into space. See Sporadic E.