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  • 12/26/2008 | The K7RA Solar Update

    Snow has fallen all week here in Seattle, and the Sun is still void of spots. We last saw sunspots on December 10, 11 and 12. The solar flux -- a measure of 2.8 GHz radio energy from our Sun -- has been running between 68-69 for weeks, except for December
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  • 11/26/2008 | The K7RA Solar Update

    This is an early bulletin for the Thanksgiving holiday, as ARRL is closed on Friday, the regular day for release of this bulletin. We plan another brief regular propagation bulletin on Monday, December 1 that will contain the propagation numbers for Novem
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  • 10/10/2008 | The K7RA Solar Update

    A familiar sight appeared this week, as a sunspot emerged for one day, then was gone. Based on its magnetic polarity and high position in our Sun's southern hemisphere, sunspot 1003 was a new Solar Cycle 24 sunspot; like all the other recent sunspots, it
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