The K7RA Solar Update

[ARRL]

With sunspot numbers and solar flux at times both above 300, recent daily space weather has been exciting for radio amateurs who watch the sun. We like higher activity because it correlates with a dense ionosphere, bringing with it better conditions on higher frequencies.

This extreme activity also comes with greater geomagnetic disturbance, which cause higher absorption of HF signals.

For exa...

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