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The K7RA Solar Update

A

ARRL

Well-Known Member
Nov 15, 2008
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Solar activity was down this week (September 18-24) when compared with a week earlier, but solar flux is on a rising trend.

Average daily sunspot numbers dropped from 124.9 (for September 11-17) to 80.9, and average daily solar flux slipped from 139.8 to 128.3.

The latest predicted solar flux and planetary A index has flux values at 165 on September 26-28, 170 on September 29-30, 165 and 160 on O...

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    June VHF

    The American Radio Relay League (ARRL) is the national association for amateur radio, connecting hams around the U.S. with news, information and resources.
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