The shortwave frequencies have to be altered regularly because of varying physical propagation conditions. Unlike FM, medium and long wave frequencies, shortwave frequencies have to be changed ...

Radio transmission in the 1.7-30 MHz frequency range worldwide. Like AM radio, shortwave signals reflect back from the ionosphere and follow the curvature of the earth. As a result, shortwave (SW ...

BBC Radio broadcasts throughout the UK on analogue, DAB digital Radio, digital television and online. Our stations available on analogue are listed below with the frequencies where you can find them.

AM waves, which have a lower frequency, are attenuated when they are refracted from the ionosphere or the Earth’s surface, resulting in shorter travel distances than shortwaves. Shortwave radio ...

A QSL Card from Radio Moscow probably got many 14-year-olds on government watch lists. (Public domain) Between World War II and Y2K, shortwave ... exist as streaming stations or a mix of radio ...