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  • latest081612

    08/17/2012 | The K7RA Solar Update

    There was a big drop in solar activity over the past week, with the average daily sunspot numbers declining nearly 42 points to 77.6, and the average daily solar flux down 20 points to 114.7.
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  • latest011912

    01/20/2012 | The K7RA Solar Update

    New sunspot groups appeared on every day over the past week. On January 12, new sunspot group 1396 appeared, and the next day two more -- 1397 and 1398 -- popped into view. On January 14, four new sunspot groups appeared: 1399, 1400, 1401 and 1402. Januar
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  • Mineo Wakita, JE9PEL, predicts that ARISSat-1 will de-orbit in early April

    11/15/2011 | ARISSat-1 May De-Orbit in April

    The ARISSat-1 satellite may re-enter Earth's atmophere in early April.
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  • latest072111

    07/22/2011 | The K7RA Solar Update

    The average daily sunspot numbers for the week rose nearly 27 points to 92.4, while the average daily solar flux increased more than 9 points to 98.2. Sunspot numbers for July 14-20 were 79, 90, 75, 101, 127, 96 and 79, with a mean of 92.4. The 10.7 cm fl
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  • latest070711

    07/08/2011 | The K7RA Solar Update

    The average daily sunspot numbers for the past week dropped less than a point -- from 42 to 41.6 -- compared to the previous week, while the average daily solar flux was down more than 5 points to 86.2. Sunspot numbers for June 30-July 6 were 34, 51, 54,
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  • latest021011.jpg

    02/11/2011 | The K7RA Solar Update

    Seven different sunspot groups were visible over the past week. The high sunspot number in the past seven days was 71 on Tuesday, and the average daily sunspot number more than doubled, rising more than 24 points to 44.3. The average daily solar flux was
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  • latest012011.jpg

    01/21/2011 | The K7RA Solar Update

    The average daily sunspot numbers dropped from 50 (on the reporting week ending January 5) to 38 on January 6-12, and now 21.3 on January 13-19. Sunspot numbers for January 13-19 were 14, 11, 11, 15, 36, 34 and 28, with a mean of 21.3. The 10.7 cm flux wa
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