Automatic repeater station for signal transmissions

Telecommunications – Carrier wave repeater or relay system – Plural modulated carriers

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Details

455 20, 455 22, 455126, H04B 714

Patent

active

054086817

ABSTRACT:
An automatic repeater station, sometimes called a relay system, is disclo. The relay system receives signals, preferably at one band of frequencies, then filters and restores their inherent information, and finally transmits the restored information, preferably at another band of frequencies. Unlike the prior art systems utilizing transceivers and electronically tunable filters, the present invention uses separate receivers and transmitters and is devoid of electronically tunable filters.

REFERENCES:
patent: 3922674 (1975-11-01), Gingras et al.
patent: 4554514 (1985-11-01), Whartenby et al.
patent: 4941200 (1990-07-01), Leslie et al.
patent: 5144258 (1992-09-01), Nakanishi et al.

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