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  • K7RA Solar Update

    06/21/2013 | The K7RA Solar Update

    The K7RA Solar Update
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    10/01/2010 | The K7RA Solar Update

    HF radio conditions were good over this past week, with the average daily sunspot numbers up more than 5 points to 45.3, and the average solar flux rising 1.5 points to 84.4. On Wednesday, September 29, the solar flux was 90.7; the last time flux values w
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  • sunspot032510

    03/26/2010 | The K7RA Solar Update

    New sunspot group 1057 appeared on March 23; by March 24, it was 38 times its original size. It covered 10 one-millionths of the solar hemisphere on Tuesday, and on Wednesday, it grew to 380 one-millionths. On Thursday, new sunspot group 1058 appeared, an
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