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Shift in Project 25 process should help APCO's control

The FCC's release of 6 MHz of spectrum in the 800 MHz band to public safety to be exclusively coordinated by the International Associated Public Safety Communications Officials (APCO) was conditional. Project 25 was the result of this conditional release, which necessitated the development of a...

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Bibliographic Details
Published in:Communications (Englewood. 1964) 1995-04, Vol.32 (4), p.92
Main Author: Gallelli, Joe
Format: Article
Language:English
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Summary:The FCC's release of 6 MHz of spectrum in the 800 MHz band to public safety to be exclusively coordinated by the International Associated Public Safety Communications Officials (APCO) was conditional. Project 25 was the result of this conditional release, which necessitated the development of an interoperable digital specification for radio equipment designed for public safety spectrum. In 1989, the APCO leadership adopted Project 25 and began the task of assembling related manufacturers, users, standard setting bodies, and others interested parties into a "working organization." The APCO steering committee ruled in favor of Frequency Division Multiple Access (FDMA) over Time Division Multiple Access (TDMA), based on the nature of public safety, which is frequency-control oriented, from frequency coordination to operational behavior. However, the controversy concerning access method did not end with the decision to adopt FDMA. Ericsson has continued to develop arguments that support TDMA and has established a following of public safety radio communications suppliers and users.
ISSN:0010-356X