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What exactly are the key Solar Indicies?

When you find yourself on a solar weather website and you see three measurements front and centre on your screen, have you ever wondered what they actually mean? Solar Flux Index, SFI, Sunspot Number, SSN, and Area are three indices used to measure solar activity along with the R and Kp values. Let’s take a look at what these values mean to amateur radio.

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Jun 05, 2022

What a great source of information.. thank you ! Craig vk3ncr

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