ARRL

Search for Amateur Radio News

  • 10/31/2008 | The K7RA Solar Update

    Solar Cycle 24 is slowly building momentum. We saw sunspots for eight days in a row -- October 10-17 -- then 12 days of no spots. Another sunspot -- number 1007 -- appeared on October 30 from Solar Cycle 24. It is a high latitude sunspot and may provide s
    Learn More

  • 10/24/2008 | The K7RA Solar Update

    Visible sunspots continued last week for eight days straight, the longest continuous period of sunspot visibility since the 12 days of March 23April 3 last year. Sunspot numbers for October 16-22 were 24, 11, 0, 0, 0, 0 and 0 with a mean of 5. The 10.7 cm
    Learn More

  • 10/10/2008 | The K7RA Solar Update

    A familiar sight appeared this week, as a sunspot emerged for one day, then was gone. Based on its magnetic polarity and high position in our Sun's southern hemisphere, sunspot 1003 was a new Solar Cycle 24 sunspot; like all the other recent sunspots, it
    Learn More

  • 09/26/2008 | The K7RA Solar Update

    This week saw the appearance of another sunspot -- a new Solar Cycle 24 spot -- larger and lasting a little longer than last week's Solar Cycle 23 sunspot. It appeared for two days, September 22 and 23, with sunspot numbers of 18 and 16.
    Learn More

  • 09/12/2008 | The K7RA Solar Update

    A new sunspot -- number 1001 -- emerged on Thursday, September 11. It is actually a single group with two small magnetic disturbances; we hope it is not another like the last sunspot, a weak one that barely emerged on August 21-22. That spot was so small
    Learn More

  • 08/01/2008 | The K7RA Solar Update

    July ended with no sunspots at all -- save for three days, July 18-20, when one weak sunspot group appeared and faded from view. Sunspot numbers for those days were 11, 12 and 11. Sunspot numbers for July 24-30 were 0, 0, 0, 0, 0, 0 and 0 with a mean of 0
    Learn More

  • 07/18/2008 | The K7RA Solar Update

    If today is like yesterday and the day before that, it will be the 26th consecutive day with no sunspots. Think this is bad? At the last solar minimum, there were only four days showing any sunspots between September 5 and October 24, 2006.
    Learn More

  • 06/13/2008 | The K7RA Solar Update

    Sunspot 998 emerged this week, another old Solar Cycle 23 sunspot near the Sun's equator. Daily sunspot numbers for June 10-12 were 14, 11 and 13. Last Sunday, June 8, had the lowest 10.7 cm solar flux value I've ever seen -- 64.9 -- at the observatory in
    Learn More