Mining Publication: Wireless MF Communication System
This report adds to the current boy of underground communications system design knowledge by: accurately defining (measuring) the 12 dB SINAD sensitivity of the system receivers and then stating the equivalent magnetic field strength in uA/m; showing that when a passageway repeater is used in loop to loop via the line communication link that the received signal level dependence in line current is only at the first power of distance; and maximizing the transmit magnetic moment is extremely important in the design of the transmit antenna network.
Contract/MOA ReportSeptember - 1980
NIOSHTIC2 Number: 20031946
A.R.F. Products, Inc. U.S. Department of the Interior, Bureau of Mines. Monthly Technical Letter Report Number Nine, Contact No. H0308004, Sept 1980; :1-39