↑ What is the Solar Flux Index?

This page is part of the project "Understanding HF Propagation"
by Doron Tal, 4X4XM

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

ConditionsBADLowAverageGoodBetterBest
MUF< 15 MHz> 21 MHz> 24 MHz> 28 MHz> 50 MHz
SFI6783102124148172196219240273

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.


Visitors' flags since 17-August-2022
flags of visitors!