East Rand Amateur Radio Club

  • Increase font size
  • Default font size
  • Decrease font size
ERB-Home -> Archive
Archives

Filter 

  • The K7RA Solar Update (01/05)

    Created: Sunday, 03 May 2009 09:46 Author: K7RA
    The K7RA Solar Update The data at the end of last week's bulletin showed daily sunspot numbers from April 16-22 as six zeros, then 11. In fact, every day was at zero until April 21, when it was 11; it moved again to zero the next day, April 22. We ...