The maximum usable frequency (MUF) is the highest frequency reflected from the ionosphere, effectively predicting propagation conditions between specific locations at a given time. This MUF map visualizes the current ionospheric conditions that affect global HF radio propagation, aiding radio operators in assessing optimal frequencies and communication paths.How to use this MUF propagation map? 2. Additional notes 3. Animated map
HF Propagation project provides radio amateurs with an informative overview and tutorials on HF propagation conditions.