With solar flux numbers not seen since 2004, the higher HF bands have seen a surge in activity. The solar flux has been at least 100 since August 20. On September 10, it reached 116, rising to 121 the next day. It climbed steadily, reaching a peak of 190 on Saturday, September 24. While higher solar flux is exciting news for all hams, Technicians should definitely take note: The 10 meter band i...
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