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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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06/24/2011 | The K7RA Solar Update
Over the past week -- June 16-22 -- the average daily sunspot number rose nearly 20 points to 55, while the average daily solar flux readings increased by nearly 9 points to 98.6. All geomagnetic indices declined slightly. These increases or decreases are
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06/17/2011 | The K7RA Solar Update
The average daily sunspot numbers for the past week declined by more than half, nearly 52 points to 35.1, when compared to the previous week. Sunspot numbers for June 9-15 were 46, 35, 37, 16, 16, 48 and 48, with a mean of 35.1. The 10.7 cm flux was 87.5,
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06/03/2011 | The K7RA Solar Update
Sunspot activity is up sharply this week, with the average daily sunspot number increasing more than 55 points to 89.9, while the average solar flux rose nearly 20 points to 103.1. Sunspot numbers for May 26-June 1 were 40, 65, 91, 89, 105, 132 and 107, w
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05/27/2011 | The K7RA Solar Update
Our Sun was certainly quieter this week. The average daily sunspot numbers were down nearly 17 points to 51.6, while the average daily solar flux declined nearly 9 points to 83.2. Sunspot numbers for May 19-25 were 36, 33, 44, 47, 37, 23 and 23, with a me
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04/20/2011 | Transatlantic Amateur Radio Balloon Flight Postponed
Transatlantic balloon flight postponed to next week.
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04/15/2011 | The K7RA Solar Update
On Wednesday, April 13, the daily sunspot number reached a new high for Solar Cycle 24 when it hit 153. I looked back over this calendar year and saw that the previous high was 137 on March 8, 2011, 16 points lower than Wednesday. That week’s Solar Update
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04/01/2011 | The K7RA Solar Update
The activity we could see recently on our Sun’s far side -- thanks to the STEREO mission -- has been rotating into view, producing some nice sunspot activity and the resulting improved upper-HF propagation. Compared to the previous week (March 17-23), the
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