Skywave
Videos
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. Si
Radio waves (black) reflecting off the ionosphere (red) during skywave propagation. Line altitude in this image is significantly exaggerated and not to scale.
Example of F2 and Sporadic-E Propagation on the 10-meter band taken from PSK Reporter (Mins = Minutes).
Mast radiator
Videos
A mast radiator is a radio mast or tower in which the metal structure itself is energized and functions as an antenna. This design, first used widely in the 1930s, is commonly used for transmitting an
A typical mast radiator and antenna tuning hut of an AM radio station in Chapel Hill, North Carolina, U.S.
Typical 60-meter (200 ft) triangular guyed lattice mast of an AM radio station in Mount Vernon, Washington, US
The Blosenbergturm, a freestanding tower antenna in Beromünster, Switzerland
To ensure that the mast acts as a single conductor, the separate structural sections of the mast are connected electrically by copper jumpers.