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NCJRS Abstract

The document referenced below is part of the NCJRS Library collection. To conduct further searches of the collection, visit the NCJRS Abstracts Database. See the Obtain Documents page for direction on how to access resources online, via mail, through interlibrary loans, or in a local library.

 
  NCJ Number: NCJ 212975     Find in a Library
  Title: Radio Spectrum
  Document URL: PDF 
  Corporate Author: National Institute of Justice (NIJ)
US Department of Justice
Office of Justice Programs
United States of America
  Date Published: 02/2006
  Page Count: 2
  Annotation: After explaining the basic technology and terminology of radio communications, this paper examines spectrum allocations/regulations and how they may impact radio communications for public safety agencies now and in the future.
  Abstract: Radio communications use radio waves at different frequencies (the number of times that a wave repeats in a second), grouped within bands, which are part of the radio spectrum. The radio spectrum is the complete range of frequencies that can be used for radio communications, with various frequency ranges composing bands. The bands of interest to public safety agencies include high frequency (HF), very high frequency (VHF), and ultra high frequency (UHF). Spectrum allocations for State and local public safety agencies are fragmented into many slices of the radio spectrum. Regulation of specific frequencies for Federal Agency use occurs within the National Telecommunications and Information Administration, and the Federal Communications Commission (FCC) regulates the spectrum for non-Federal users. The total amount of State and local public safety spectrum allocated within bands is approximately 97 MHz and is subject to change pending resolution of re-banding issues in the 800 MHz bands. The FCC is reviewing a mandate that directs all public safety agencies to move to systems based on 12.5 kHz narrowband channels by some future data. To avoid interference between systems that use the same or adjacent frequencies, the FCC licenses a channel to only one user in a given area. 2 notes
  Main Term(s): Science and Technology
  Index Term(s): Police radio frequencies ; Police telecommunications systems ; Voice communications
  Sale Source: National Institute of Justice/NCJRS
Box 6000
Rockville, MD 20849
United States of America
  Type: Report (Technical)
  Country: United States of America
  Language: English
  Note: In Short: Toward Criminal Justice Solutions, February 2006
   
  To cite this abstract, use the following link:
https://www.ncjrs.gov/App/Publications/abstract.aspx?ID=234466

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