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K Index, A Index, (SFI) Solar Flux Index, HF Band Conditions, Propagation

10 months ago ReddingProphet1 0
Three major indexes are used by HF Ham operators to interpret probable HF band propagation at any given time – K index, A index and SFI. The Sun is constantly shooting electro-magnetic particles into the Earth’s ionosphere. These particles along with seasonal weather, solar flares and Sunspot activity, combine to create ever-changing, low to severe Read More