Big increase in solar activity this week, with average daily sunspot number rising from 129 to 215.9, and solar flux from 176.6 to 226.5.
Fourteen new sunspot groups emerged. Two were on July 11, one on July 12, three on July 13, one on July 14, two more on July 15, three more on July 16 and two more on July 17.
On Thursday (after the reporting week) the daily sunspot number was 276, the highes…
Read more – via American Radio Relay League | Ham Radio Association and Resources http://www.arrl.org/news/view/the-k7ra-solar-update-837
More Stories
via the ARRL: Colombian Amateurs Help in Earthquake Response; Clear Frequencies Requested
via the ARRL: ARISS Receives Challenger-7 Recognition
via Amateur Radio Daily: Ham Fair 2026 Updates: Kenwood and Uniden to Showcase New Radios