Radiocommunication system in which a receiving station monitors

Details Radiocommunication system in which a receiving station monitors Radiocommunication system in which a receiving station monitors

1981-06-22

1983-12-27

Yusko, Donald J.

Communications: electrical

Continuously variable indicating

With meter reading

34082552, 34082521, 455 62, 455 32, H04Q 900, H04J 312, H04B 702

Patent

active

044234139

ABSTRACT:
System for transmitting, via radiocommunication channels, call messages as specified in CCIR Recommendation 493-1. The transmitter transmits every call message, having a duration t, n times with a message frequency r. The receiving station, designed for monitoring n calling stations by time division has a monitoring period T=(n-1)/(n+1).multidot.t/r per station to be monitored. Only one receiver is used. The identification signal of the called station will always be recognized during one of the monitoring periods T, after which the monitoring period can be prolonged, if necessary.

REFERENCES:
patent: 3541449 (1970-11-01), Broderick et al.
patent: 4013958 (1977-03-01), Spayth
patent: 4155040 (1979-05-01), Harmon et al.
patent: 4276654 (1981-06-01), Nations et al.
patent: 4328581 (1982-05-01), Harmon et al.

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