Welcome to CDC stacks | Technical services for mine communications research : transmit antennas for portable VLF to MF wireless mine communications - 8885 | National Institute for Occupational Safety and Health
Stacks Logo
Advanced Search
Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.
 
 
Help
Clear All Simple Search
Advanced Search
Technical services for mine communications research : transmit antennas for portable VLF to MF wireless mine communications
  • Published Date:
    May 1977
  • Language:
    English
Filetype[PDF-5.20 MB]


This document cannot be previewed automatically as it exceeds 5 MB
Please click the thumbnail image to view the document.
Technical services for mine communications research : transmit antennas for portable VLF to MF wireless mine communications
Details:
  • Personal Authors:
    Lagace, Robert L.
  • Corporate Authors:
    Arthur D. Little, Inc. ; United States. Bureau of Mines. ;
  • Series:
    Open file report (United States. Bureau of Mines) ; 92-78
  • Keywords:
  • Description:
    "An investigation was made of the feasibility of developing compact transmit antennas and/or other means to efficiently couple very low frequency (VLF) to medium frequency (MF) band radio energy between portable wireless communication units in coal mines. The completely wireless communication range between two portable radios equipped with practical size reference loop antennas in representative coal mine environments was estimated. Antenna technology was assessed with respect to transmit moment, range, intrinsic safety, battery, and wearability requirements to determine the most suitable antenna types for use by miners. It was concluded that aircore bandolier loop antennas, and perhaps ferrite-loaded loop antennas, having peak transmit moments of about 2.5 Ampere/m2 would be the most effective antennas for portable units." - NIOSHTIC-2

    NIOSHTIC no. 10001390

  • Document Type:
    Report
  • Collection(s):
    National Institute for Occupational Safety and Health
  • Funding:
    Arthur D. Little, Inc., report ADL-77229-Task C, under Bureau of Mines contract H0346045
  • Supporting Files:
    No Additional Files
No Related Documents.
You May Also Like:
  1. Through-the-earth electromagnetic trapped miner location systems : a review
    Personal Author:
    Pittman, Walter E., Jr.; Church, Ronald H.; McLendon, J. T.;
    Corporate Author:
    Tuscaloosa Research Center (United States. Bureau of Mines)
    Published:
    1985
    Series:
    Open file report (United States. Bureau of Mines) ; 1985-127
    Description:
    "In its role of providing technical assistance to the mining industry, the Bureau of Mines' Tuscaloosa Research Center has conducted research to develop trapped miner location systems which would aid in locating miners trapped by underground mining d...
    File Type:
    Filetype[PDF - 2.64 MB]
  2. Research and development contract for coal mine communication system. Volume 1, Summary and results of system study
    Personal Author:
    Laubengayer, William C.; Ware, K. Michael; Gehring, Robert D.; Wilson, Larry R.; Decker, Ramsey P.; Anderson, Dean T.;
    Corporate Author:
    Collins Radio Company.; United States. Bureau of Mines.;
    Published:
    15 November 1974
    Series:
    Open file report (United States. Bureau of Mines) ; 1975-69
    Collins report ; v. 1
    Description:
    "Eight coal mines were visited to determine their communications usage and requirements. Presently available equipment was surveyed and evaluated to determine its applicability to the needs of the mines. The requirements, as determined from the surve...
    File Type:
    Filetype[PDF - 2.15 MB]
  3. Coal Mine Communications
    Personal Author:
    Schiffbauer, William H; Brune, Jürgen F.;
    Published:
    0/1/1900
    Description:
    Communication problems are not new. Research in this area goes back as far as 7922 when the US Bureau of Mines performed experiments to detect radio signals from inside their experimental mine in Bruceton, Pennsylvania. Many improvements to mine comm...
    File Type:
    Filetype[PDF - 350.04 KB]
  4. Propagation of EM signals in underground mines.
    Personal Author:
    Cory, Terry S.
    Corporate Author:
    United States. Bureau of Mines.; Collins Commercial Telecommunications Group. Circuit Switching Systems Division.;
    Published:
    September 1977
    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 ha...
    File Type:
    Filetype[PDF - 3.08 MB]
  5. A Hybrid Approach for Efficient Modeling of Medium-Frequency Propagation in Coal Mines
    Personal Author:
    Brocker, Donovan E.; Sieber, Peter E.; Waynert, Joseph A.; Li, Jingcheng; Werner, Pingjuan L.; Werner, Douglas H.;
    Published:
    Mar 9 2015
    Source:
    IEEE Antennas Propag Mag. 174(1):164-176.
    Description:
    An efficient procedure for modeling medium frequency (MF) communications in coal mines is introduced. In particular, a hybrid approach is formulated and demonstrated utilizing ideal transmission line equations to model MF propagation in combination w...
    File Type:
    Filetype[PDF - 2.28 MB]