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System Study of Coal Mine Communications.

Authors
Anonymous
Source
NTIS: PB/237-218 Available for Reference At Bureau Libraries :30 pages
Link
NIOSHTIC No.
10001378
Abstract
This research (Contract No. S0122076) involved a three-phase program to establish a data base, perform communication system analysis and optimization, and prepare equipment specifications to be included in this report. Communication system requirements and constraints were determined along with a survey of current and potential mine communication equipment. An investigation was completed concerning theoretical low frequency and very low frequency propagation characteristics, and ultra-high frequency propagation tests were conducted in a working coal mine.
Publication Date
19730101
Document Type
CP; Final Contract Report;
Fiscal Year
1973
NTIS Accession No.
PB-237218
NTIS Price
A03
Identifying No.
OFR 56-74
NIOSH Division
PRC;
Source Name
NTIS: PB/237-218; Available for Reference At Bureau Libraries
Performing Organization
Collins Radio Company
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