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The current distribution on the mast determines the radiation pattern. The radio frequency current flows up the mast and reflects from the top, and the direct and reflected current interfere, creating an approximately sinusoidal standing wave on the mast with a node (point of zero current) at the top and a maxima one quarter wavelength down [6] [8]
A radio mast base showing how virtually all lateral support is provided by the guy-wires. The terms "mast" and "tower" are often used interchangeably. However, in structural engineering terms, a tower is a self-supporting or cantilevered structure, while a mast is held up by stays or guy-wires. [1] A mast
Mont Agel Broadcasting Mast 1946 France Fontbonne 145 m originally mast radiator with lattice tower as basement, today used for FM-/TV-broadcasting [6] Waldenburg TV Tower? Germany: Waldenburg 145 m antenna mast dismantled in 2009 Mekhzavod Radio Mast ? Russia Mekhzavod 142 m Mast radiator on small lattice tower [7] Sendeturm Jauerling: 1958 ...
A tower array is an arrangement of multiple radio towers which are mast radiators in a phased array. [1] They were originally developed as ground-based tracking radars. [2] Tower arrays can consist of free-standing or guyed towers or a mix of them. Tower arrays are used to constitute a directional antenna of a mediumwave or longwave radio station.
The diamond-shaped tower was patented by Nicholas Gerten and Ralph Jenner for Blaw-Knox July 29, 1930. [5] and was one of the first mast radiators.[1] [6] Previous antennas for medium and longwave broadcasting usually consisted of wires strung between masts, but in the Blaw-Knox antenna, as in modern AM broadcasting mast radiators, the metal mast structure functioned as the antenna. [1]
A guyed radio mast. A guyed mast is a tall thin vertical structure that depends on guy lines (diagonal tensioned cables attached to the ground or a base) for stability. The mast itself has the compressive strength to support its own weight, but does not have the shear strength to stand unsupported or bear loads.
Jennifer Tipsworth, 47, is a breast cancer survivor — but radiation took a toll on her body and left her in pain. Community rallies to support Brighton woman losing ribs to radiation Skip to ...
Radio towers and masts that have been demolished or destroyed due to engineering error, replacement, or controlled demolition. Some of the radio masts could be either unfinished or abandoned. Pages in category "Former radio masts and towers"