<P> In radio communication , skywave or skip refers to the propagation of radio waves reflected or refracted back toward Earth from the ionosphere , an electrically charged layer of the upper atmosphere . Since it is not limited by the curvature of the Earth , skywave propagation can be used to communicate beyond the horizon , at intercontinental distances . It is mostly used in the shortwave frequency bands . </P>
<P> In radio communication , skywave or skip refers to the propagation of radio waves reflected or refracted back toward Earth from the ionosphere , an electrically charged layer of the upper atmosphere . Since it is not limited by the curvature of the Earth , skywave propagation can be used to communicate beyond the horizon , at intercontinental distances . It is mostly used in the shortwave frequency bands . </P>
the radio waves which are received after reflection from ionosphere are called
the radio waves which are received after reflection from ionosphere are called
skywave
skywave