Development of a call alert system for paging mine personnel.
Trombly-JE; Lipoff-SJ; O'Brien-PF
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, Contract H0262026, 1978 Jan; :1-65
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.
Mine Communications; Personnel Pagers; Radio Paging; Pager Phones; Pager Telephones; Paging
CP; Final Contract Report
NTIS Accession No.
OFR 111-82; Contract-H0262026
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, Contract H0262026
Arthur D. Little, Inc.