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Radio propagation

Uploader: Arashikree 1 years ago  
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It is used by amateur radio operators to talk to other countries, and shortwave broadcasting stations that broadcast internationally. Ground waves are used by radio broadcasting stations in the MF and LF bands, and for time signals and radio navigation systems. Ward Silver and Mark J. A radio wave directed at an angle into the sky can be reflected back to Earth beyond the horizon by these layers, allowing long distance radio transmission. For example, this mode is used to send radio signals over a mountain range when a line-of-sight path is not available.

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