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Development of a call alert system for paging mine personnel.

Authors
Trombly-JE; Lipoff-SJ; O'Brien-PF
Source
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, Contract H0262026, 1978 Jan; :1-65
NIOSHTIC No.
10002479
Abstract
This report presents system objectives and design criteria for an in-mine ultralow frequency radio paging system. Coding formats, frequency, and bandwidth selection criteria leading to the system design are discussed. The prototype call alert transmitter and pocket page receiver is functionally described. The report includes circuit descriptions, schematics, parts lists, printed circuit fabrication, and assembly drawings. The report concludes with an estimate of the manufacturing cost for each assembly.
Keywords
Mine Communications; Personnel Pagers; Radio Paging; Pager Phones; Pager Telephones; Paging
Publication Date
19780101
Document Type
CP; Final Contract Report
Fiscal Year
1978
NTIS Accession No.
PB82-251562
NTIS Price
A05
Identifying No.
OFR 111-82; Contract-H0262026
NIOSH Division
PRC
Source Name
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, Contract H0262026
State
MA; PA
Performing Organization
Arthur D. Little, Inc.
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