The K7RA Solar Update

[ARRL]

Solar activity was very, very quiet over the past week. For the reporting period September 5-11, the average daily sunspot number was only 37.7. Average daily sunspot numbers as reported in this bulletin have not been nearly this low since June 6-12 of this year, when it was 39.6. The last time it was lower was June 21-27 of last year, when it was 26.3.

Australia’s IPS Radio and Space Services i...





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