Power-line carrier communications system with interference avoid

Details Power-line carrier communications system with interference avoid Power-line carrier communications system with interference avoid

1982-09-24

1984-10-23

Atkinson, Charles E.

Excavating

375100, 455 62, H04B 712

Patent

active

044792158

ABSTRACT:
The operating frequency of a multi-station power-line-carrier-communications system is automatically changed to avoid narrowband interference. Any one of the plurality of stations in the system can initiate a command to shift operating frequency, when the communications signal reception degrades below a predetermined criterion. An interfering signal itself can initiate a shift in operating frequency when the characteristics of the interfering signal are sufficient to deteriorate communications on an existing operating frequency.

REFERENCES:
patent: 3349374 (1967-10-01), Gabrielson et al.
patent: 3475684 (1969-10-01), Covill
patent: 3781794 (1973-12-01), Morris
patent: 4241445 (1980-12-01), Payen
patent: 4328581 (1982-05-01), Harmon et al.
patent: 4352183 (1982-09-01), Davis et al.

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