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The K7RA Solar Update

ARRL

Well-Known Member
Nov 15, 2008
10,956
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Over the past week, on Monday, October 21, 10.7 cm solar flux sunk to possibly the lowest level in recorded history. Solar flux was 64, which is even lower than the 64.4 value recorded way back on July 2, 1954 at the start of solar cycle 19, by far the biggest solar cycle ever recorded. I understand that solar flux dipped to 64.2 in 1906.

The average solar flux this past week was lower than the ...

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