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03/30/2012 | The K7RA Solar Update

Eight new sunspot groups appeared this week, but the average daily sunspot number declined four points to 71.1; the average daily solar flux rose by less than two points to 103.7. Sunspot numbers for March 22-28 were 86, 74, 65, 84, 56, 63 and 70, with a
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09/02/2011 | The K7RA Solar Update

Sunspot activity rose again this week, with the average daily sunspot number up nearly 18 points to 83, but the geomagnetic indices -- both planetary and mid-latitude -- were each down slightly. The high sunspot number for the week was 121, recorded on We
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05/21/2011 | Amateur Radio Quiz: Hip, Hip, Hooray for the TLAs!

You can’t hardly do anything in EmComm without encountering a TLA (Three Letter Acronym), or even ones with a few more letters and maybe, dare I hope, a hyphen -- be still my thundering heart. These are invaluable in saving time which is why they are so c
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07/23/2010 | The K7RA Solar Update

Sunspot activity increased recently, although it is foolish to call this a trend, since solar activity has great variability. Sunspot group 1087 was visible for 13 days over July 9-21. In millionths of a solar hemisphere, its size was 30, 100, 120, 130, 7
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