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  • Solar Flare

    12/27/2013 | The K7RA Solar Update

    2013 ends with quiet, lackluster conditions
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  • latest081012

    08/10/2012 | The K7RA Solar Update

    The average daily sunspot numbers rose more than 20 points this week -- about 20 percent -- to 119.4, while the average daily solar flux was up 3 points to 134.7. Sunspot numbers for August 2-8 were 126, 160, 140, 107, 108, 96 and 99, with a mean of 119.4
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  • latest030112

    03/02/2012 | The K7RA Solar Update

    The average daily sunspot number this week was down 12 points from the previous week, and the solar flux was about the same. Sunspot numbers for February 23-29 were 52, 47, 47, 58, 45, 35 and 22, with a mean of 43.7. The 10.7 cm flux was 103.3, 108.9, 108
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  • latest111810.jpg

    11/19/2010 | The K7RA Solar Update

    Five new sunspot groups appeared in the past nine days, and the average daily sunspot number for the November 11-17 period rose nearly 28 points from the week before to 60.9. The average daily solar flux was up nearly four points to 87.9. Sunspot numbers
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  • Sunspot060310

    06/04/2010 | The K7RA Solar Update

    The average daily sunspot numbers were up nine points to 25.3 for this week, compared to the May 20-26 period; the average daily planetary A index rose nearly 10 points to 14.3, and this rise in geomagnetic instability came with the increase in solar acti
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  • Sunspot052010

    05/21/2010 | The K7RA Solar Update

    Eleven days with no sunspots, but something emerged late Thursday, and it may be the return of old sunspot group 1069. Sunspot group 1069 was visible from May 4-8 before disappearing over the horizon. The return of that sunspot gives a daily sunspot numbe
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  • K4GUN

    09/01/2009 | Get Ready for the Upcoming ARRL September VHF QSO Party

    September is here, and according to ARRL Contest Branch Manager Sean Kutzko, KX9X, that means the VHF bands are getting a workout. "If you've never experienced the fun of VHF+ operating, the ARRL September VHF QSO Party is a great place to start.&quo
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  • WSJT

    08/05/2009 | Prepare for the Perseids!

    On the night of August 11 and well into the next day, Earth will make its annual passage through the bulk of the debris shed by a comet known as Swift-Tuttle. Much of the debris is composed of dust-sized grains, but when these fragments come plunging into
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