Designing 18 Channels Of Local Distribution Service Using Filtered Pulse Width Modulation (1970)

By Dr. Joseph Vogelman, Chromalloy American Corporation & Ira Kamen, Laser Link Corporation

The Federal Communications Commission, in supporting the dockets for the "Local Distribution Service" (LDS), has awakened a slumbering billion-dollar giant for cable operators in urban and rural areas. This new air-link, CATV service, provides a communications highway of electromagnetic energy which can accommodate a vast number of services, to fill an array of social needs. LDS will not only be an entertainment and advertising service, important as they are to society, but it wiII also provide information, education, community awareness, and political expression on an economical basis. LDS, as authorized, not only solves the urban problem, but provides the vehicle for taking existing systems in rural and suburban areas, and allows them to extend their services economically to contiguous small communities, jumping highways, crossing rivers, surmounting terrain barriers, and doing so for a fraction of the cost of cables. To understand one of the techniques proposed for this service, this paper is a full disclosure as to how the Quasi-Laser Link System functions.

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