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    12/16/2011 | ARRL Headquarters to Close for Christmas, New Year’s Holidays

    ARRL Headquarters will be closed Monday, December 26 and Monday, January 2 in observance of Christmas and New Year’s Day. There will be no W1AW bulletins or code practice transmissions those days. There will be no ARRL Letter or ARRL Audio News on Thursda
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    12/16/2011 | The K7RA Solar Update

    Solar activity dropped this week, with the average daily sunspot numbers declining more than 39 points to 94.7. It’s been 13 weeks since the average daily sunspot number for the week was that low or lower, when we reported an average of 91.7 in the Septem
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    12/09/2011 | The K7RA Solar Update

    What happened to that new “grand minima”? Solar Cycle 24 just keeps rolling along -- for the first seven days in December, there were eight new sunspot groups. December 5 had the largest sunspot coverage over the past week, with a daily sunspot number of
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    11/23/2011 | The K7RA Solar Update

    Not much in the way of solar excitement this week, except there are many sunspots, but the solar activity in terms of flares or coronal mass ejections is low. The overlapping (by one day) average sunspot numbers in this bulletin declined 21 points to 124.
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    11/16/2011 | ARRL Headquarters to Close for Thanksgiving Holidays

    ARRL Headquarters will be closed November 24 and 25 in observance of Thanksgiving. There will be no W1AW bulletins or code practice transmissions those days. The ARRL Letter will be published a day early on Wednesday, November 23, but there will be no ARR
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    10/21/2011 | The K7RA Solar Update

    Our Sun continues to be very active, with most days revealing more sunspots. We saw one new sunspot group on October 9, another on October 10, two more on October 11 and two more on October 12. But that’s not all: There was another on October 13, two more
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    09/23/2011 | The K7RA Solar Update

    Compared to the uneventful past few years, sunspot activity was truly remarkable this week. The daily sunspot number for September 16 was 173. We haven't see numbers like this in more than six years, when the sunspot number was 181, way back on July 5, 20
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    07/29/2011 | The K7RA Solar Update

    Sunspot activity dipped over this past week, but now it on its way back up. On July 20, five sunspot groups were visible, but on July 21, only groups 1251, 1254 and 1259 remained. On July 24, new sunspot group 1260 appeared, and the next day, 1251 disappe
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