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1958 - mobile antenna for installation in hard to reach places


CD 1967066 E&MP111.001

Radio Propagation

April 1, 1958

When erected, the D.S. Kennedy & Co. mobile antenna stands almost three stories high…its radiation center 24 feet from the ground, higher than standard types.

The antenna's mobility makes it ideally suited for scatter propagation experiments, for installation in hard to reach places or for general antenna applications.

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D.S. Kennedy & Co., Mass., designer and manufacturer of large antenna systems, exhibited its new 28-foot mobile antenna at the institute of Radio Engineers Convention, March 24 through 27 at the New York Coliseum.

Retractable wheels in the antenna tower are used to convert the structure into a trailer which can be towed over public highways by an ordinary car or difficult terrain by truck or tractor. The antenna's 28-foot welded aluminum parabolic reflector is sectionalized and can be dismantled and stored within its mounting tower along with the feed supports and feed components.

The unique construction adapts the antenna particularly to scatter propagation site surveys and its mobile feature makes it possible to run tests at various locations.

The combined weight and load is only 3,300 pounds and the dimensions are 30' long, 8' high. At the site, the antenna stands 38 feet above ground.

The antenna's compact structure and self-stow features achieve many economies in shipping costs, the company said. For air shipment, it may be rolled aboard a military transport plane and secured without additional crating.

The Kennedy mobile antenna also permits simple assembly and erection. A four-man crew can unpack, assemble, erect and properly adjust an antenna in less than four hours.

Although designed to withstand winds up to 85 miles per hour, the quick dismantling time enables operators to lower the antenna, stow the sections and tie the tower to the ground as soon as serious storm warnings are posted.
Original Caption by Science Service
Albert Frank-Guenther Law, Inc.

National Museum of American History


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