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  • In-Brief-th.jpg

    10/25/2012 | No ARRL Audio News on October 25

    There will be no ARRL Audio News on Thursday, October 25. The ARRL Letter will be distributed on its usual schedule. The Audio News will return on Thursday, November 1.
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    10/19/2012 | The K7RA Solar Update

    Sunspot activity rose this week, with the average daily sunspot numbers up more than 45 points to 97, while the average daily solar flux rose more than 24 points to 129.2.
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    09/28/2012 | The K7RA Solar Update

    The average daily sunspot numbers rose this week from 56 to 81.3, while the average daily solar flux increased from 101.4 to 129.7.
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    08/31/2012 | The K7RA Solar Update

    Although solar activity is quite low, there was an increase in sunspot numbers and in the solar flux over the past week. The average daily sunspot numbers were up nearly 20 points -- about 36 percent -- to 74.1, while the average daily solar flux increase
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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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    08/03/2012 | The K7RA Solar Update

    The average daily sunspot numbers this week were up more than 47 points to 99.3, while the average daily solar flux rose nearly 35 points to 131.7.
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    07/13/2012 | The K7RA Solar Update

    Solar activity rose moderately this week, with the average daily sunspot numbers up nearly 3 points to 120.9, and the average daily solar flux rising more than 28 points to 166.8. There was quite a bit of geomagnetic activity -- the most happening on July
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    07/06/2012 | The K7RA Solar Update

    Solar activity jumped way up this week, with the average daily sunspot numbers increasing by nearly 92 points to 118.1, while the average daily solar flux rose to 138.5 from 92.8 the week before.
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