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Solar Cycle 25 Producing Record High Sunspot Numbers

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ARRL

Well-Known Member
Nov 15, 2008
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By: Frank Donovan, W3LPL

Editor’s note: This article was written earlier in the week. The latest measurements show even higher numbers. See this week's K7RA Solar Report in The ARRL Letter for latest information.

Record High Solar Cycle 25 Solar Maximum Sunspot Numbers Have Improved HF Propagation Since Mid-July and Possibly Bringing Worldwide 6 Meter F2 Propagation This Fall.


According to the NO...

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