The following map visualizes the current ionospheric conditions that affect global HF radio propagation, aiding radio operators in assessing optimal frequencies and communication paths. What is MUF? — Maximum usable frequency is the highest possible frequency (HPF) that supports communication between two points on Earth by refraction from the F ionospheric region at a specified time, independent of transmitter power. The project "Understanding HF Propagation," focuses on near-real-time maps (charts) and explains what they mean.
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Real time radio propagation map
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