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09/23/2011 | The K7RA Solar Update
Compared to the uneventful past few years, sunspot activity was truly remarkable this week. The daily sunspot number for September 16 was 173. We haven't see numbers like this in more than six years, when the sunspot number was 181, way back on July 5, 20
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04/29/2011 | The K7RA Solar Update
Geomagnetic conditions are quiet this week, but they may become slightly unsettled over this weekend. The average daily sunspot numbers were down more than 18 points to 74.9, while the average daily solar flux was off less than 4 points to 113.4. Sunspot
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01/07/2011 | The K7RA Solar Update
The average daily sunspot numbers were up nearly 24 points this week to 50, while the average daily solar flux rose more than 9 points to 89.5. The lagging three month average of daily sunspot numbers was down 3.5 points from last month’s average of the p
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Feature
01/03/2011 | ARRL in Action: What Have We Been Up to Lately?This feature -- including convenient Web links to useful information -- is a concise monthly update of some of the things ARRL is doing on behalf of its members. This installment covers the month of December.
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12/14/2010 | New Edition of ON4UN’s Low-Band DXing Now Shipping!
The fifth edition of ON4UN’s Low-Band DXing: Antennas, Equipment and Techniques for DXcitement on 160, 80 and 40 Meters by John Devoldere, ON4UN, features new and updated material. This is a book -- with CD-ROM included -- that every fan of 40 meters thro
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12/03/2010 | The K7RA Solar Update
The average daily sunspot numbers for the week of November 25-December 1 increased only slightly from the previous seven days: 1.3 points to 25.9. Sunspot numbers for November 25-December 1 were 22, 23, 22, 34, 31, 24 and 25, with a mean of 25.9. The 10.7
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11/12/2010 | The K7RA Solar Update
Both the average daily sunspot numbers and solar flux increased over the past week, with sunspot numbers up 7.4 points to 33.1, and solar flux up 2.1 points to 84.2. Four new sunspot groups have appeared since November 4. For some reason, NOAA is currentl
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11/04/2010 | Cuba Activates Emergency Nets for Tropical Storm Tomas
As Tropical Storm Tomas moves toward the eastern part of Cuba, the Federación de Radioaficionados de Cuba (FRC) has now activated HF emergency nets on 7.045 MHz (during the day or until propagation makes it possible), 7.045 MHz (during the night or when p
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