-
08/20/2010 | The K7RA Solar Update
Thanks so much to Tomas Hood, NW7US, who wrote last week’s bulletin while K7RA was in California at dance camp. Tomas writes the weekly propagation column for CQ magazine, and he has an excellent Web site devoted to propagation. Tomas mentioned that the A
Learn More -
06/18/2010 | The K7RA Solar Update
The average daily sunspot numbers were up 2.5 points from last week, despite the fact that there were no sunspots at all this week on June 15-16. A new sunspot group 1082 emerged yesterday, June 17, and yielded a daily sunspot number of 14. A nice thing a
Learn More -
05/21/2010 | The K7RA Solar Update
Eleven days with no sunspots, but something emerged late Thursday, and it may be the return of old sunspot group 1069. Sunspot group 1069 was visible from May 4-8 before disappearing over the horizon. The return of that sunspot gives a daily sunspot numbe
Learn More -
05/07/2010 | The K7RA Solar Update
Sunspots made a strong return this week -- and so did geomagnetic activity. The average daily solar flux increased 4.2 points to 79.6; on Wednesday, May 5, the daily sunspot number reached 77, the highest in nearly four years. The sunspot number hasn’t be
Learn More -
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.
Learn More