JPS57193146A - Monitoring system for relay station - Google Patents

Monitoring system for relay station

Info

Publication number
JPS57193146A
JPS57193146A JP7821981A JP7821981A JPS57193146A JP S57193146 A JPS57193146 A JP S57193146A JP 7821981 A JP7821981 A JP 7821981A JP 7821981 A JP7821981 A JP 7821981A JP S57193146 A JPS57193146 A JP S57193146A
Authority
JP
Japan
Prior art keywords
relay station
signal
radio
subpilot
oscillator
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.)
Granted
Application number
JP7821981A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6328374B2 (enrdf_load_stackoverflow
Inventor
Izumi Okuno
Tsunehiro Unten
Osamu Yamamoto
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 JP7821981A priority Critical patent/JPS57193146A/ja
Publication of JPS57193146A publication Critical patent/JPS57193146A/ja
Publication of JPS6328374B2 publication Critical patent/JPS6328374B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/40—Monitoring; Testing of relay systems
    • H04B17/401—Monitoring; Testing of relay systems with selective localization
    • H04B17/402—Monitoring; Testing of relay systems with selective localization using different frequencies

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
JP7821981A 1981-05-23 1981-05-23 Monitoring system for relay station Granted JPS57193146A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7821981A JPS57193146A (en) 1981-05-23 1981-05-23 Monitoring system for relay station

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7821981A JPS57193146A (en) 1981-05-23 1981-05-23 Monitoring system for relay station

Publications (2)

Publication Number Publication Date
JPS57193146A true JPS57193146A (en) 1982-11-27
JPS6328374B2 JPS6328374B2 (enrdf_load_stackoverflow) 1988-06-08

Family

ID=13655932

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7821981A Granted JPS57193146A (en) 1981-05-23 1981-05-23 Monitoring system for relay station

Country Status (1)

Country Link
JP (1) JPS57193146A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH052787U (ja) * 1991-07-02 1993-01-19 ヤンマー農機株式会社 生ゴミ処理機の防虫剤投入機構

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53144204A (en) * 1977-05-21 1978-12-15 Mitsubishi Electric Corp Transmitting system for optical communication circuit monitor/order signal

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53144204A (en) * 1977-05-21 1978-12-15 Mitsubishi Electric Corp Transmitting system for optical communication circuit monitor/order signal

Also Published As

Publication number Publication date
JPS6328374B2 (enrdf_load_stackoverflow) 1988-06-08

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