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The K7RA Solar Update

ARRL

Well-Known Member
Nov 15, 2008
10,596
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Conditions turned a little more favorable since last week’s bulletin with both solar flux and sunspot numbers up, and geomagnetic indices substantially lower.

Average daily sunspot numbers for the August 11-17 period were 73.9, compared to 52 for the previous seven days. Average daily solar flux went from 87.9 to 89.2. Average daily planetary A index dropped from 14.6 to 6.9, and average mid-lat...

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