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The K7RA Solar Update

A

ARRL

Well-Known Member
Nov 15, 2008
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Sunspot numbers made a profound leap over the past week, with the sunspot number on November 15 reaching 272, then 282 on November 17. This is a record for the current solar cycle, and this level of activity has not been observed for over a decade. Unfortunately the sunspot number declined rapidly since then, falling below 100.

You can check in the ARRL Propagation Bulletin archives to see what ...





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