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03/09/2012 | The K7RA Solar Update
This has been quite a week for dramatic solar activity. The average daily sunspot number was up nearly 26 points to 69.4, while the average daily solar flux rose nearly 17 points to 121.9 for the period March 1-7. Sunspot numbers for March 1-7 were 24, 24
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12/02/2011 | The K7RA Solar Update
Solar Cycle 24 continues its upturn. We have a new high for the trailing three month daily sunspot number average. Starting with the three month period ending in December 2010 and going through November 2011, they were 30.1, 35.3, 55.7, 72.3, 74.4, 65.9,
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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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05/06/2011 | The K7RA Solar Update
Currently, there are seven sunspot groups that are visible. But even so, the average daily sunspot number is down more than 7 points over the past reporting week (April 28-May 4), when compared to the previous seven days. The average daily solar flux was
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03/05/2011 | The K7RA Solar Update
Solar activity is rising again, but the average sunspot numbers and solar flux are down, compared with last week. This week, the average daily sunspot number declined more than 14 points to 50.9, and the average daily solar flux was off 7 points to 96.8.
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12/24/2010 | The K7RA Solar Update
Sunspots disappeared this week. Five days with no spots is the longest since May 9-19, 2010, when we saw 11 days in a row in which the Sun was spotless. Since then, there has only been the occasional day or two which was spot-free. April 2010 saw 13 conse
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Feature
11/20/2010 | Amateur Radio Quiz: Getting One’s BearingsBy H. Ward Silver, N0AX
n0ax@arrl.net Hams need to point their antennas accurately, but how can you do that if you don’t know the words used to describe direction? Ready, fire, aim! 1) For two different stations to have short-path bearings that are exac...
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10/15/2010 | The K7RA Solar Update
Solar activity dropped again this week, although it is now gradually strengthening. The average daily sunspot numbers declined nearly 16 points to 11.7, and average daily solar flux dropped more than 5 points to 75.8. Over the next two weeks, the solar fl
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