Null initiated method and system for monitoring a priority chann

Details Null initiated method and system for monitoring a priority chann Null initiated method and system for monitoring a priority chann

1988-02-24

1990-01-30

Griffin, Robert L.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

H04B 1116

Patent

active

RE0331570

ABSTRACT:
A null initiated priority channel monitoring system provides enhanced nonpriority signal intelligibility and/or enhanced priority channel sensitivity during sample times. The priority channel or channels are monitored during nulls in the received nonpriority signal. The system can have a minimum time period between priority channel monitoring periods to avoid substantially continuous priority channel monitoring. The system can also have a maximum time period between priority channel monitoring or sampling periods to avoid missing any priority channel signal.

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patent: 4608712 (1986-08-01), Fedde

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