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The surveys revealed that high-mast lighting was by far the preferred method of lighting. [3] By 1967, Europe was known to have high-mast illumination technology in practice. 1968 saw the first permanent US installations of high-mast illumination starting in Auburn, Washington south of Seattle. The first American towers were 100 ft (30 m) tall ...
The common high white strobe flashes 40 times per minute, at an intensity of 270,000 candelas for daytime, 20,000 candelas at twilight, and 2,000 candelas at nighttime. [1] Dual lighting is a system in which a structure is equipped with white strobes for daytime use, and red lights for nighttime use. In urban areas, these are commonly preferred ...
Guyed tubular steel mast 290 Storm High winds caused oscillations in the mast structure WNBC-AM, WCBS-AM, at High Island, New York, [7] August 27, 1967: Guyed lattice steel mast 161 Aircraft collision KELO TV Tower, Rowena, South Dakota: June 24, 1968: Guyed steel lattice mast 609 Airplane collision during thunderstorm WAEO Tower, Starks, Wisconsin
A mast radiator or mast antenna is a radio tower or mast in which the whole structure is an antenna. Mast antennas are the transmitting antennas typical for long or medium wave broadcasting. Structurally, the only difference is that some mast radiators require the mast base to be insulated from the ground.
High-mast lighting along Highway 401 in Ontario, Canada Conventional streetlights are used instead of high-mast lighting near airport runway approaches due to the negative effects caused by the latter. Because of the dangers discussed above, roadway lights are properly used sparingly and only when a particular situation justifies increasing the ...
Light mast without lamps Light mast at stadium. Light mast is a tall lighting specified [clarification needed] mast, which has several big searchlights on top of it. Light masts illuminates large areas and are possible to move, which is why they are used (for example) as farming, construction and emergency works implement.
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