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The K7RA Solar Update

ARRL

Well-Known Member
Nov 15, 2008
10,887
52
58
Sunspot activity increased recently, although it is foolish to call this a trend, since solar activity has great variability. Sunspot group 1087 was visible for 13 days over July 9-21. In millionths of a solar hemisphere, its size was 30, 100, 120, 130, 70, 100, 60, 50, 20, 10, 10, 10 and 10. On July 19, new sunspot group 1089 appeared over the eastern horizon, with a relative size of 130, 150,...





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