Geophysical Centre in Dourbes

Real time MUF

We provide the maximal usable frequency (MUF) for HF-radio communications at a range of distances.

These values are automatically calculated from the most recent ionogram produced by the ionosonde in Dourbes.

The values are usually updated every fifteen minutes. The most recent MUF values are available in a format that can easily be machine-read and can be viewed here

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