JPS5574247A - Line monitor system for radio relay line - Google Patents

Line monitor system for radio relay line

Info

Publication number
JPS5574247A
JPS5574247A JP14832278A JP14832278A JPS5574247A JP S5574247 A JPS5574247 A JP S5574247A JP 14832278 A JP14832278 A JP 14832278A JP 14832278 A JP14832278 A JP 14832278A JP S5574247 A JPS5574247 A JP S5574247A
Authority
JP
Japan
Prior art keywords
signal
antenna
output
detector
detected
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
JP14832278A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6228615B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html
Inventor
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 JP14832278A priority Critical patent/JPS5574247A/ja
Publication of JPS5574247A publication Critical patent/JPS5574247A/ja
Publication of JPS6228615B2 publication Critical patent/JPS6228615B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/60—Supervising unattended repeaters

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
JP14832278A 1978-11-30 1978-11-30 Line monitor system for radio relay line Granted JPS5574247A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14832278A JPS5574247A (en) 1978-11-30 1978-11-30 Line monitor system for radio relay line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14832278A JPS5574247A (en) 1978-11-30 1978-11-30 Line monitor system for radio relay line

Publications (2)

Publication Number Publication Date
JPS5574247A true JPS5574247A (en) 1980-06-04
JPS6228615B2 JPS6228615B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1987-06-22

Family

ID=15450184

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14832278A Granted JPS5574247A (en) 1978-11-30 1978-11-30 Line monitor system for radio relay line

Country Status (1)

Country Link
JP (1) JPS5574247A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4499600A (en) * 1980-08-26 1985-02-12 International Standard Electric Corporation Supervision of transmission systems
WO2002067446A1 (fr) * 2001-02-22 2002-08-29 Fujitsu Limited Dispositif de filtrage supraconducteur et amplificateur de recepteur sans fil

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4499600A (en) * 1980-08-26 1985-02-12 International Standard Electric Corporation Supervision of transmission systems
WO2002067446A1 (fr) * 2001-02-22 2002-08-29 Fujitsu Limited Dispositif de filtrage supraconducteur et amplificateur de recepteur sans fil
US7058436B2 (en) 2001-02-22 2006-06-06 Fujitsu Limited Superconducting filter apparatus and wireless receiving amplifier having an abnormality discriminating circuit

Also Published As

Publication number Publication date
JPS6228615B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1987-06-22

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