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ARI e ARRL In quest'area trovate notizie provenienti dal sito ufficiale dell'ARRL e dall'ARI

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Old 08-11-19, 12:30   #1
USA_bot
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Join Date: Sep 2007
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The K7RA Solar Update

Two new sunspot groups appeared this week, on two consecutive days, each lasting for only a day, with a daily sunspot number of 11 and 13 on Friday and Saturday of last week, just in time for ARRL CW Sweepstakes. Both sunspot groups had a magnetic polarity signature indicating Solar Cycle 25 and appeared after 4 weeks of no sunspots.

Spaceweather.com reported both appearances as region AR2750, y...



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