Electromagnetic location system prototype and communication station modification. Final summary report, Apr--Jul 1973
Technical Report
·
OSTI ID:7093414
A prototype electromagnetic Location System was fabricated and tested at the Geneva Mine near Dragerton, Utah. The system consisted of six manpack transmitters and six manpack receivers covering the frequency band from 900 Hz to 2900 Hz as well as a six channel receiver designed for use in a helicopter. Tests showed that EM signals from lighweight (3/4 lb) transmitters could be detected both on the surface and from a helicopter through as much as 1650 ft of relatively high conductivity (0.02 mhos/m) over-burden. Modifications were made to a Monitoring, Locating and Communications System being tested at the Bruceton Mine, Pittsburgh, Pennsylvania. These modifications improved the performance and quality of the paging and voice telephony mode of the system. Subsurface receiver modifications improved reception of voice downlink signals. (Modified author abstract) (GRA)
- Research Organization:
- Westinghouse Electric Corp., Boulder, CO (USA). Georesearch Lab.
- OSTI ID:
- 7093414
- Report Number(s):
- PB-226660/9
- Country of Publication:
- United States
- Language:
- English
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