The Ionosphere enables Skywave PropagationThe atmosphere is classified into layers based on its physical properties and functions. In that region, EUV sunlight ionizes atoms and molecules, releasing free electrons and ions that combine to form plasma. The ionosphere is divided into layers/regions that range in altitude from 48 to 600 kilometers above the earth's surface. These layers are distinguished by their electron densities. HF radio waves aimed at the inosphere can be bounced, allowing for global communication channels. Back to the main page: Ionosphere radio wave propagation. See also an index for HF Radio Propagarion. |
The Understanding HF Propagation Project offers radio amateurs a comprehensive overview and tutorials on various topics related to HF propagation.