The K7RA Solar Update

Discussion in 'ARRL News Feeds' started by American Radio Relay, May 11, 2018.

  1. Sunspots reappeared this week, after none on April 28 through May 3. Average daily sunspot numbers increased from 3.6 (last week) to 14.6 (May 3-9).

    So far in 2018 56-percent of days were spotless. For all of 2017 the rate was about half or 28-percent, for the whole year, a total of 104 days. These numbers are according to spaceweather.com.

    Seemingly counter-intuitively considering the slight ris...

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