IonoFlux field guide
Global band conditions
How to read IonoFlux global HF band conditions.
In simple terms
This view summarizes how often a band looks usable across many representative paths. It is a big-picture guide, not a forecast for one station.
How to read it
Compare day and night columns, then open the dashboard or run a path prediction for your own locations. Higher percentages mean more opportunities, not guaranteed contacts.
A practical example
If 20 m is strong on the day side and 40 m is strong at night, start with 20 m in daylight and try 40 m after sunset. Local noise and antennas still decide the final result.