Solar flux (SFI) represents the level of solar activity. High SFI correlate with good HF propagation conditions.
The solar flux today is Loading solar flux data... (solar flux units). Source: NOAA Space Waether Prediction Center
Conditions | BAD | Low | Average | Good | Better | Best |
MUF | < 15 MHz | > 21 MHz | > 24 MHz | > 28 MHz | > 50 MHz |
SFI | 67 | 83 | 102 | 124 | 148 | 172 | 196 | 219 | 240 | 273 |
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Monitoring solar flux as well as other propagation indices is essential for optimizing communication strategies and maintaining reliable connections. The project Understanding HF Propagation provides a detailed overview and tutorials covering this subject.
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