ARRL

Register Account

Login Help

Search for Amateur Radio News

  • Solar Disc

    05/06/2016 | The K7RA Solar Update

    A slght increase in solar activity
    Learn More

  • Solar Flare

    02/05/2016 | The K7RA Solar Update

    Quiet conditions in the forecast
    Learn More

  • Solar flare

    10/24/2014 | The K7RA Solar Update

    Solar activity rebounded this week in spectacular fashion
    Learn More

  • Solar flare

    10/10/2014 | The K7RA Solar Update

    The prediction for the planetary A index posits a more active geomagnetic future, at least for the near term.
    Learn More

  • latest022113

    02/22/2013 | The K7RA Solar Update

    There was a modest rise in the average daily sunspot numbers over the past seven days, rising 27 points to 78.3, while the average daily solar flux was up marginally, only 1.6 points to 105.6.
    Learn More

  • latest012011.jpg

    01/21/2011 | The K7RA Solar Update

    The average daily sunspot numbers dropped from 50 (on the reporting week ending January 5) to 38 on January 6-12, and now 21.3 on January 13-19. Sunspot numbers for January 13-19 were 14, 11, 11, 15, 36, 34 and 28, with a mean of 21.3. The 10.7 cm flux wa
    Learn More

  • latest120910.jpg

    12/10/2010 | The K7RA Solar Update

    The average daily sunspot numbers for the week were up more than nine points to 35, and average solar flux rose more than six points to 87.3. These differences compare the dates of December 2-8 with the previous seven days. The average planetary A index d
    Learn More

EXPLORE ARRL

Instragram     Facebook     Twitter     YouTube     LinkedIn