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A whole-mine medium-frequency radio communication system.

Authors
Dobroski-HH; Stolarczyk-LG
Source
Proceedings of the Sixth WVU Conference on Coal Mine Electrotechnology, Morgantown, West Virginia, July 28-30, 1982. Cooley WL, ed., Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, Contract J0123017, 1982 Nov; :124-136
NIOSHTIC No.
20033464
Abstract
A rnedium-frequency (MF) cornmunication systern has been built and has been tested in underground rnines. It provides radio coverage to vehicles and personnel anywhere in the mine via parasitic coupling into existing mine conductors. The system consists of base stations, repeaters, and vehicular and personnel transceivers. Air-core antennas for vehicles and clamp-on antennas for base stations and repeaters were designed for inaximum coupling efficiency using existing mine wiring. Personnel transceivers are of a unique vest design that features a low physical profile, good user comfort, and efficient antenna design. In-mine tests show impressive results. Range between rubber-tired vehicles and base stations is often measured in miles. With repeaters, greater range is possible.
Keywords
Mining-industry; Underground-mining; Mining-equipment; Electronic-equipment; Electronic-devices; Technical-personnel; Electrical-transmission; Electromechanical-systems; Electronic-components; Electronic-devices
Publication Date
19821101
Document Type
Conference/Symposia Proceedings
Editors
Cooley-WL
Fiscal Year
1983
NTIS Accession No.
NTIS Price
NIOSH Division
PRC
Source Name
Proceedings of the Sixth WVU Conference on Coal Mine Electrotechnology, Morgantown, West Virginia, on July 28-30, 1982.
State
NM; PA; WV
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