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05/04/2012 | The K7RA Solar Update
The average daily sunspot numbers declined 38 points to 106.7 this week, while the average daily solar flux declined nearly 18 points to 116.2. Sunspot numbers for April 26-May 2 were 117, 99, 118, 114, 104, 99 and 96, with a mean of 106.7. The 10.7 cm fl
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02/10/2012 | Surfin’: Chasing Aurora (But Don’t Tell My Wife)This week, Surfin’ chases aurora on the air and on the tube.
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01/20/2012 | The K7RA Solar Update
New sunspot groups appeared on every day over the past week. On January 12, new sunspot group 1396 appeared, and the next day two more -- 1397 and 1398 -- popped into view. On January 14, four new sunspot groups appeared: 1399, 1400, 1401 and 1402. Januar
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12/23/2011 | The K7RA Solar Update
The average daily sunspot numbers this week were about the same as last week, while the average daily solar flux declined a little more than eight points to 128.9. Geomagnetic indicators were quiet. The average daily sunspot numbers of 95.3 for the week i
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09/01/2011 | Hams from North Carolina to Maine Provide Communication Support Before, During and After Hurricane Irene
Hurricane Irene -- the first major hurricane of the 2011 hurricane season -- left extensive flood and wind damage along its path through the Caribbean, the East Coast of the United States and as far north as Atlantic Canada. Beginning on August 20 as then
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08/15/2011 | ARRL and California Researchers Team Up to End 12 Meter Interference
After the resolution of the recent 60 meter CODAR situation on the East Coast, the ARRL noted an earlier report by John Terrell, N6LN, of Palos Verdes, California. Terrell described CODAR activity on the 12 meter band, from 24.93 to 25.058 MHz. Since it a
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08/03/2011 | Investigation by ARRL OOs, Researchers Leads to Resolution of 60 Meter Interference
Collaboration between ARRL Official Observers and researchers at Rutgers University has resulted in a change of operating frequency of coastal HF radars, eliminating interference to amateur stations using two frequencies in the 60 meter (5 MHz) band,
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07/22/2011 | Surfin’: Updating Surfin’This week, Surfin’ revisits and updates recent installments of itself.
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