Radiating telecommunication systems

Details Radiating telecommunication systems Radiating telecommunication systems

1975-06-12

1976-09-07

Griffin, Robert L.

325 51, H04B 726

Patent

active

039796744

ABSTRACT:
A telecommunication system used in a mine has a long aerial along a tunnel which radiates signals to a mobile station. Signals from the station are radiated back to the line. Repeaters are included along the line to make up power losses. A connection of an extra length of line is made on the output side of each repeater and extends back parallel to the line for a distance of up to half the distance between adjacent repeaters. This extra line reduces the attenuation of signal power between repeaters.

REFERENCES:
patent: 2980793 (1961-04-01), Daniel
patent: 3585505 (1971-06-01), Ogilvy
patent: 3750020 (1973-07-01), Baba et al.
patent: 3916311 (1975-10-01), Martin

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