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  • latest102011

    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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  • latest101311

    10/14/2011 | The K7RA Solar Update

    We are definitely continuing to see robust solar activity. Sunspot numbers for October 6-12 were 99, 88, 61, 71, 87, 113 and 149, with a mean of 95.4. The 10.7 cm flux was 123.9, 122, 118.4, 121, 126.4, 130.1 and 134.1, with a mean of 125.1. The estimated
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  • 2009ARRLDXSSB.jpg

    02/23/2011 | The HF Bands Come Alive for the ARRL International DX SSB Contest

    With the CW running of the ARRL International DX Contest over, it’s time to get ready for the phone portion. With the solar flux peaking at 125 during the CW contest -- and 10 meters in unexpectedly good shape and open to Europe all through the event -- o
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  • large-flare.jpg

    02/15/2011 | Sunspot 1158 Produces Largest Flare of Solar Cycle 24; CME Headed Toward Earth

    Over the past few days, there has been a lot of activity on the Sun. On Sunday, February 13 at 1738 UTC, sunspot 1158 unleashed an M6.6-level blast and on Tuesday, February 15, the same sunspot unleashed an X-class flare, the strongest solar flare in more
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  • latest110410.jpg

    11/05/2010 | The K7RA Solar Update

    The average daily sunspot numbers declined again this week, this time by nearly 25 points to 25.7, about half what it was last week. Last week’s average was down about 5 points from the week before, when it was 55.6. Sunspot numbers for October 28-Novembe
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  • sunspot021610

    02/12/2010 | The K7RA Solar Update

    Increasing sunspot activity continues. A glance at the image from NASA's STEREO mission shows a string of active regions in the Sun's northern hemisphere, both visible and over the horizon on the far side.
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  • CW

    02/10/2010 | Get Ready for the ARRL DX CW Contest

    The weekend of February 20-21 will be a busy one for CW operators as the 2010 ARRL DX CW Contest takes center stage. First started in 1929 as the ARRL International Relay Party, the ARRL DX CW contest lays claim to the longest running contest in Amateur R
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  • 08/28/2009 | The K7RA Solar Update

    Sunspot numbers for August 20-26 were 0, 0, 0, 0, 0, 0 and 0 with a mean of 0. The 10.7 cm flux was 67.6, 66.4, 66.6, 67.3, 67.6, 67.1 and 67.3 with a mean of 67.1. The estimated planetary A indices were 11, 8, 5, 5, 3, 3 and 4 with a mean of 5.6. The est
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