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08/05/2011 | The K7RA Solar Update
Solar activity markedly increased this week, with the sunspot number rising to 130 on Monday, August 1 -- the highest since a reading of 131 on April 14, 2011. The average daily sunspot numbers more than doubled this week compared to last, rising nearly 5
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08/05/2010 | Active Sun Puts on Display for Earth
It was quite a busy weekend for our Sun. During the late hours of Friday, July 30, a magnificent coronal mass ejection (CME) billowed away from the eastern limb of the Sun; the source of the blast was apparently sunspot 1092. On Sunday, August 1 at approx
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Feature
02/19/2010 | Surfin': Ham Apps for EveryoneThis week, Surfin' finds more smartphone ham radio apps for iPhones and non-iPhones alike.
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01/22/2010 | The K7RA Solar Update
A steady stream of sunspot activity continues to dot the Sun. We had just one day with a daily sunspot number of 0 this week -- January 19 (Tuesday) when sunspot group 1040 moved over the horizon.
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11/07/2008 | The K7RA Solar Update
Sunspot 1007 is still there, but probably rotating off the visible solar disk sometime today. This is the eighth sunspot of the new solar cycle -- and also the largest. Sunspot numbers for October 30-November 5 were 13, 16, 16, 17, 18, 14 and 11 with a me
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05/02/2008 | The K7RA Solar Update
For several weeks we expected today, May 2, to have active geomagnetic conditions. For instance, if you look at a forecast from April 23, it shows an expected planetary A index for May 1-3 of 10, 20 and 15. The next day, April 24, this changed to 8, 20 an
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