Near-Real-Time F2-Layer Critical Frequency Map
This map can be used to determine the frequencies that will always be returned to the Earth. Transmitted frequencies higher than the indicated contours (which are given in MHz) may penetrate the ionosphere, resulting in lost power to space.
The map shows the radio auroral zones as green bands near the northern and southern poles.
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You will find this resource in just one category on our links directory. The title of the main category is MUF Indicators and it deals mainly with MUF Indicators. The resource has been on our site since Sunday Sep 3 2006, and it has been viewed 5271 times. So far it received 24 votes for a total score of 4.84/10
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