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  • Friday, November 18, 2011

    The K7RA Solar Update

    This week geomagnetic indices quieted a bit, as did solar activity in general. On November 9, sunspot numbers reached a high of 220, and this week, they declined, rose to 176 and then declined again. The average daily sunspot numbers slipped 8.4 points to 145, while the average daily solar flux dropped 12.5 points to 161.2. Sunspot numbers for November 10-16 were 152, 127, 155, 142, 176, 137 an...


    Via ARRL - Read the full Article