Radio communication systems for underground mines

Details Radio communication systems for underground mines Radio communication systems for underground mines

1982-07-27

1988-10-11

Masinick, Michael A.

Telecommunications

Wireless distribution system

455 14, 455 15, 455 41, 455 55, 455 89, H04B 500

Patent

active

047776528

ABSTRACT:
A radio communications system operational within the medium frequency range for underground mine communications, coupling MF carrier signals into existing conductive channels extending to within the mine and devices within the mine and coupled to the conductive channel for receiving the MF carrier signals and communicating with portable and mobile transceivers operational within the MF frequency range and in the common seam mode.

REFERENCES:
patent: 2285083 (1942-06-01), Cover, Sr.
patent: 3505615 (1970-04-01), Simons
patent: 3543262 (1970-11-01), Hutton
patent: 3609247 (1971-09-01), Halstead
patent: 3750020 (1973-07-01), Baba et al.
patent: 3803366 (1974-04-01), Ishii et al.
patent: 3942170 (1976-03-01), Whyte
patent: 4142178 (1979-02-01), Whyte et al.
"System Design and Performance of an MF Radio Communication System for Underground Mining" by Stolarczyk & Chufo, 5-9/10/1981.
"A Mental Telegraf" by Buchbinder, Radio News, 6/1921.
"The Design of Cellular MF Radio Communication System for Underground Mining" by Stolarczyk, 11/30-12/4/1980.

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