-
Feature
12/08/2009 | Amateur Radio Quiz: From One End to the OtherAt the bottom of the solar cycle during the month of the winter solstice, there are two contests that span the limits of our MF/HF spectrum. The ARRL 160 Meter Contest ran last weekend and conditions were expected to be excellent. The other is the AR
Learn More -
10/30/2009 | The K7RA Solar Update
Well, what a week it has been. The solar flux hit 82.3 on Tuesday, the highest recording yet since the first-observed "new cycle sunspot" in January 2008, the "official" visual start of Solar Cycle 24. Even as I write this, the flux is
Learn More -
07/24/2009 | The K7RA Solar Update
No new sunspots yet, but a big surprise this week with aurora and a geomagnetic storm: Sunspot activity peaked around 0300-0900 UTC on Wednesday July 22, with K index as high as 6. The planetary A index for the day was 24. You can see the K index variatio
Learn More -
08/22/2008 | The K7RA Solar Update
Another week of quiet Sun, but on Wednesday and Thursday -- August 20-21 -- a new spot seemed to be emerging, but there is no sign that it is anything other than an old Solar Cycle 23 spot. Spaceweather.com reported it with a sunspot number of 11 for Augu
Learn More -
08/08/2008 | The K7RA Solar Update
As mentioned in last week's report, Carl Luetzelschwab, K9LA, is filling in for your regular reporter Tad Cook, K7RA. For the reporting period August 1-7, solar activity was at very low levels and the geomagnetic field was at quiet levels. Solar activity
Learn More -
04/25/2008 | The K7RA Solar Update
This week we had a couple of brief sunspot appearances -- 991 and 992 -- but they were both from Solar Cycle 23 and their emergence was fleeting. On Wednesday, April 23, the planetary A index rose to 32 due to a solar wind and south-pointing Interplanetar
Learn More
Search for Amateur Radio News
