JPS54119824A - Monitor system for radio telegraphy communication - Google Patents

Monitor system for radio telegraphy communication

Info

Publication number
JPS54119824A
JPS54119824A JP2731678A JP2731678A JPS54119824A JP S54119824 A JPS54119824 A JP S54119824A JP 2731678 A JP2731678 A JP 2731678A JP 2731678 A JP2731678 A JP 2731678A JP S54119824 A JPS54119824 A JP S54119824A
Authority
JP
Japan
Prior art keywords
monitor
monitor signal
circuit
communication
radio
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2731678A
Other languages
Japanese (ja)
Inventor
Mitsuyoshi Yamaguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP2731678A priority Critical patent/JPS54119824A/en
Publication of JPS54119824A publication Critical patent/JPS54119824A/en
Pending legal-status Critical Current

Links

Landscapes

  • Monitoring And Testing Of Transmission In General (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE: To quicken the information transmission at emergency, by taking the constitution which can confirm the present status at the master station unit other than the communication for the operators of slave station units, and by making effective use of units and electromagnetic waves, in the systems such as radio systems for disasters prevention administration.
CONSTITUTION: In the system monitoring radio telegraphy among the master unit and a plurality of slave station units 1,2...N, monitor signal delivery start circuit 20 delivering monitor signal to the slave stations 1,2...N, monitor signal oscillator 21, input circuit 22 for monitor item setting, and time monitor circuit 10 monitoring the time when communication is abnormal, are provided. Further, the monitor signal is delivered by staring the radio transceiver 1 with the output of the oscillator 21 from the slave stations 1,2...N and with the communication end signal. This monitor signal is detected with the monitor signal detection filter 8 via the monitor signal amplifying circuit 7 from the radio receiver 1 of the master unit and is displayed on the display circuit 9 every monitor item depending on the output for the delivery time of the time monitor circuit 10.
COPYRIGHT: (C)1979,JPO&Japio
JP2731678A 1978-03-09 1978-03-09 Monitor system for radio telegraphy communication Pending JPS54119824A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2731678A JPS54119824A (en) 1978-03-09 1978-03-09 Monitor system for radio telegraphy communication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2731678A JPS54119824A (en) 1978-03-09 1978-03-09 Monitor system for radio telegraphy communication

Publications (1)

Publication Number Publication Date
JPS54119824A true JPS54119824A (en) 1979-09-18

Family

ID=12217671

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2731678A Pending JPS54119824A (en) 1978-03-09 1978-03-09 Monitor system for radio telegraphy communication

Country Status (1)

Country Link
JP (1) JPS54119824A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02195735A (en) * 1989-01-25 1990-08-02 Hitachi Denshi Ltd Radio equipment control system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02195735A (en) * 1989-01-25 1990-08-02 Hitachi Denshi Ltd Radio equipment control system

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