The K7RA Solar Update

Discussion in 'ARRL News Feeds' started by American Radio Relay, Sep 6, 2019.

  1. Old Cycle 24 sunspots returned this week, but for only two days (Sunday and Monday) with a sunspot number of 12. Average daily solar flux increased from 66 reported in last week’s bulletin to 67.4 this week.

    Radiation from a coronal hole increased the average planetary A index from 5.7 last week to 19.9 this week, with the level on Saturday and Sunday at 38 and 45. In Fairbanks, Alaska’s College...

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