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antenna farm
Antenna farm or satellite dish farm or just dish farm are terms used to describe an area dedicated to television or radio telecommunications transmitting or receiving antenna equipment, such as C, Ku or Ka band satellite dish antennas, UHF/VHF/AM/FM transmitter towers or mobile cell towers.〔Google Book Search - (Wireless telecom FAQs By Clint Smith )〕〔Google Book Search - (Wireless Crash Course By Paul Bedell )
〕〔(Fiber-Optics.Info - L-Band Satellite Transport )〕 The history of the term "antenna farm" is uncertain, but it dates to at least the 1950s.〔"Five Ideco Towers Take the Punishment at the Nation's Most Antenna Farm," Broadcasting-Telecasting, 14 October 1957, 79. http://americanradiohistory.com/Archive-BC/BC-1957/1957-10-14-BC.pdf〕
In telecom circles, any area with more than three antennas could be referred to as an antenna farm. In the case of an AM broadcasting station (mediumwave and longwave, occasionally shortwave), the multiple mast radiators may all be part of an antenna system for a single station, while for VHF and UHF the site may be under joint management. Alternatively, a single tower with many separate antennas is often called a "candelabra tower".〔Google Book Search - (Antenna engineering handbook By Richard Clayton Johnson, Henry Jasik )〕
== Safety & security ==
Commercial antenna farms are managed by radio stations, television stations, satellite teleports or military organizations and are mostly very secure facilities with access limited to broadcast engineers, RF engineers or maintenance technicians. This is not only for the physical security of the location (including preventing equipment/metal theft), but also for safety, as there may be a radiation hazard unless stations are powered-down.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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