ARRL

Search for Amateur Radio News

  • Solar flare

    12/12/2014 | The K7RA Solar Update

    Quiet to mildly active conditions in the forecast
    Learn More

  • Solar Flare

    02/07/2014 | The K7RA Solar Update

    Solar activity is surging while geomagnetic activity remains low.
    Learn More

  • Solar Flare

    12/02/2013 | The K7RA Solar Update

    A post-Thanksgiving summary
    Learn More

  • latest053113.jpg

    05/31/2013 | The K7RA Solar Update

    The average daily sunspot numbers sank nearly 50 points this week to 94.3, while the average daily solar flux was down more than 16 points to 117.8. The geomagnetic indices were quite high, due to a solar wind storm.
    Learn More

  • SolarFlare042913.jpg

    05/03/2013 | The K7RA Solar Update

    Solar activity made a healthy jump over the past week, with the average daily sunspot numbers up more than 30 points to 120.9, while the average daily solar flux increased more than 27 points to 136.5.
    Learn More

  • latest031513.jpg

    03/15/2013 | The K7RA Solar Update

    Solar indicators were mixed this week, with the average daily sunspot number down 8.4 points to 84.9, while the average daily solar flux rose 5.9 points to 118.5. Geomagnetic indices were much quieter, with the average planetary A index down 4.7 points to
    Learn More

  • latest030113.jpg

    03/01/2013 | The K7RA Solar Update

    This past week, there was a decline in the solar and geomagnetic indices: The average daily sunspot number dropped nearly 21 points to 57.7, while the average daily solar flux softened by 4.7 points to 100.9 and the average daily planetary A index declin
    Learn More

  • latest123012.jpg

    12/30/2012 | The K7RA Solar Update

    The average daily solar flux was down this week about 4 points to 113.4, while the average daily sunspot numbers were down 6.7 points to 65.4. The geomagnetic indices were very low and stable, which should please 160 meter operators who are also enjoying
    Learn More