Patent
1975-06-12
1976-09-07
Griffin, Robert L.
325 4, 325 51, H04B 726
Patent
active
039796736
ABSTRACT:
A telecommunication system uses a long main transmission line which extends from a base station and has repeaters along its length. A parallel line is divided into sections corresponding in length to the distance between repeaters. Selected sections are connected in parallel with the main line through switches which operate at about a 3 kHz frequency. The switching operation reduced alternations in the main signal and mitigates problems arising from standing waves.
REFERENCES:
patent: 2980793 (1961-04-01), Daniel
patent: 3585505 (1971-06-01), Ogilvy
patent: 3750020 (1973-07-01), Baba et al.
patent: 3916311 (1965-10-01), Martin
Coal Industry (Patents) Limited
Griffin Robert L.
Ng Jin F.
Wray James C.
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