Nice numbers this week, with average daily sunspot numbers rising from 118.4 (during May 1-7) to 142.4 in the past reporting week, May 8-14. Average daily solar flux rose from 135.6 to 157.5.

The latest prediction from USAF/NOAA has solar flux values of 155 and 150 on May 16-17, 145 on May 18-20, 140 on May 21-22, 120 on May 23-26, 115 on May 27-29, 120 and 125 on May 30-31, 135 on June 1-2, 140…

American Radio Relay League | Ham Radio Association and Resources

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