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    12/31/2009 | The K7RA Solar Update

    Here we are, on the last day of the year, with finally some very positive indicators for Solar Cycle 24. Each day since December 9 (except for Christmas Day), sunspots have been visible. The average daily sunspot numbers for the week December 24-30 were 1
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  • sunspot121109

    12/11/2009 | The K7RA Solar Update

    Finally! A sunspot appeared on Wednesday, December 9, giving us a daily sunspot number of 13, following 16 days of no sunspots. And on December 10, the sunspot number was 13. The new group is number 1034, and it is a Solar Cycle 24 spot, as all sunspots h
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  • 12/01/2009 | From One End of HF to the Other: The ARRL 160 Meter and 10 Meter Contests

    Both MF and HF offer a lot of breathing room for all interests in Amateur Radio. As the 2009-2010 Contest Season continues, two single-band events in December will highlight the magic of the opposite ends of the shortwave spectrum: the ARRL 160 Meter Cont
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  • 11/25/2009 | The K7RA Solar Update

    This edition of the Solar Update will be brief. Since ARRL Headquarters is closed on Thanksgiving Day and the day after, I hope to have another bulletin out Monday morning to catch up with the sunspot, solar flux and geomagnetic data information.
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  • 11/06/2009 | The K7RA Solar Update

    In addition to the sunspot group 1029 that graced us from October 23-30, a new Solar Cycle 24 spot -- 1030 -- just emerged on Thursday. It is currently in a maximally geo-effective position (in other words, in the center longitudinal meridian as viewed fr
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  • 10/30/2009 | The K7RA Solar Update

    Well, what a week it has been. The solar flux hit 82.3 on Tuesday, the highest recording yet since the first-observed "new cycle sunspot" in January 2008, the "official" visual start of Solar Cycle 24. Even as I write this, the flux is
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  • 10/23/2009 | The K7RA Solar Update

    A tiny Solar Cycle 24 sunspot group -- numbered 1028 -- emerged briefly on Tuesday, October 20, and then was gone. This is another brief phantom sunspot, teasing us with hints of the expected increase in activity that never seems to manifest. Of course, t
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