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Improved hardware for trolley wire phone systems.

Authors
Harley-JL Jr.
Source
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, H0166144, 1979 Mar; :1-55
Link
NIOSHTIC No.
10002115
Abstract
This report presents the investigation and engineering of state-of- the-art trolley wire phone hardware. The various problem areas of trolley wire communication systems are discussed with the objective of improving circuit performance to compensate for the poor transmission characteristics of the line. Relatively inexpensive hardware designed for this purpose is detailed and documented.
Keywords
Communication equipment; Design; Loop antennas; Mines(Excavations); Transmitter receivers; Wired wireless
Publication Date
19790301
Document Type
CP; Final Contract Report
Fiscal Year
1979
NTIS Accession No.
PB81-214363
NTIS Price
A05
Identifying No.
OFR 49-81; Contract-H0166144
NIOSH Division
PRC
Source Name
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, H0166144
State
PA
Performing Organization
Gai-tronics Corp.
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