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There are also constructions, which consist of a free-standing tower, usually from reinforced concrete, onto which a guyed radio mast is installed. One example is the Gerbrandy Tower in Lopik, Netherlands. Further towers of this building method can be found near Smilde, Netherlands and the Fernsehturm in Waldenburg, Germany.
In such cases the antennas for directional radio services are mounted on the top of the free-standing part of the tower, while the guyed mast on its top carry the FM and TV antennas. They can be also used in order to upgrade small stable towers (like watertowers) with a long antenna mast for FM and TV broadcasting.
World Radio Tower Santa Maria: Santa Maria, Texas: Guyed Mast 360.3 m Richland Towers Tower Atlanta: Atlanta, Georgia Guyed Mast 360 m Trinity Broadcasting Tower Oklahoma: Oklahoma City, Oklahoma Guyed Mast 359.1 m Prairie Public Broadcasting Tower: Amenia, North Dakota: Guyed Mast 358.7 m Cox Radio Tower Security: Security, Texas: Guyed Mast ...
The LORAN-C scheme closed in 1994. In 1991, the original RÚV 1930 longwave transmitter tower at Vatnsendi (near Reykjavík) collapsed. As the Hellissandur mast was free for use, it was converted for use by RÚV (The Icelandic National Broadcasting Service) for its longwave transmissions on 189 kHz at a power of 300 kilowatts in the 1997. [2] [3]
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.
Radio amateurs build and operate several types of amateur radio stations, including fixed ground stations, mobile stations, space stations, and temporary field stations. A slang term often used for an amateur station's location is the shack , named after the small enclosures added to the upperworks of naval ships to hold early radio equipment ...
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[citation needed] To perform adequately, the counterpoise should extend at least half a wavelength from the antenna tower in all directions. [8] In designing a counterpoise for a medium-wave radio station, for example, radio-waves are a maximum of 566 metres (1,857 ft) long. Therefore, the counterpoise should extend 282 metres (925 ft) from the ...
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