Details:

Personal Author:
Cory, Terry S. ;
Corporate Authors:
United States. Bureau of Mines. ; Collins Commercial Telecommunications Group. Circuit Switching Systems Division. ;
United States. Bureau of Mines. ; Collins Commercial Telecommunications Group. Circuit Switching Systems Division. ; Less -
Description:
"This report is a comprehensive summary of the results of the propagation measurements program conducted for the Bureau of Mines. Data were gathered in the medium frequency (mf) range from a cross sample of six mines representative of the industry having typical wireless requirements. From the data that were gathered, a logical method of data reduction is presented that culminates in a set of average attenuation characteristics for all mines visited. These characteristics define a typical mf wireless system when the communication range requirements are known. Direct through-the- earth propagation and the range enhancement mechanism due to coupling on-and-off conductors are evaluated and related to the planning of a typical wireless mf communications system." - NIOSHTIC-2 NIOSHTIC no. 19770901
Subject:
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Electromagnetic Waves
Mine Communication Systems
Radio In Mining

Document Type:
Report ;
Funding:
H00366028 ;
Collection(s):
National Institute for Occupational Safety and Health
Main Document Checksum:
[+]
urn:sha256:9999d515ed66b2fc51a93185c7cb72d282ecb7921facc6063b6838cf617d0adf
File Type:

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