ARRL news
The American Radio Relay League (ARRL) is the national association for amateur radio, connecting hams around the U.S. with news, information and resources.
URL: http://www.arrl.org
Updated: 2 hours 37 min ago
The K7RA Solar Update
Solar activity increased this week, with average daily sunspot numbers rising from 149.6 to 181.6. For some reason average daily solar flux decreased from 178 to 175.
Seven new sunspot groups emerged this week, one on June 27, two on June 28, three on June 29, and one more on July 3.
Average daily planetary index rose from 10.3 to 15.6 while average middle latitude A index rose from 10.1 to 11....