Mobile radio system

Telecommunications – Transmitter and receiver at separate stations – Single message via plural carrier wave transmission

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Details

340 47, 375 36, 455 14, H04B 360, H04B 726

Patent

active

043172199

ABSTRACT:
A radio system for communications transmission between transmitting/receiving stations moving along prescribed routes and stationary transmitting/receiving stations arranged along these routes at prescribed intervals and effective in both route directions, provides that the stationary stations of one route are connected by way of cable to a central transmitting/receiving station. A carrier signal generator is connected to that end of the cable which is farthest from the central transmitting/receiving station and an amplitude modulator is connected parallel at the locations along the cable provided for the input of signals and formed by the stationary transmitting/receiving stations, and are respectively connected by way of a transformer having a high transmission ratio. A demodulator having a threshold value circuit is inserted in the central transmitting/receiving station at the end of the cable. The radio system is of particular advantage in railway radio.

REFERENCES:
patent: 2597818 (1952-05-01), Preston
patent: 3714574 (1973-01-01), Baba et al.
patent: 4006315 (1977-02-01), Halstead
patent: 4092600 (1978-05-01), Zimmermann et al.
patent: 4209749 (1980-06-01), Kloeber et al.

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