JPS6228615B2 - - Google Patents

Info

Publication number
JPS6228615B2
JPS6228615B2 JP14832278A JP14832278A JPS6228615B2 JP S6228615 B2 JPS6228615 B2 JP S6228615B2 JP 14832278 A JP14832278 A JP 14832278A JP 14832278 A JP14832278 A JP 14832278A JP S6228615 B2 JPS6228615 B2 JP S6228615B2
Authority
JP
Japan
Prior art keywords
signal
pilot
station
pilot signal
line monitoring
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.)
Expired
Application number
JP14832278A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5574247A (en
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
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 Nippon Electric Co Ltd filed Critical Nippon Electric Co Ltd
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 JPS5574247A (en) 1980-06-04
JPS6228615B2 true JPS6228615B2 (enrdf_load_stackoverflow) 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 (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2075311B (en) * 1980-08-26 1984-10-03 Standard Telephones Cables Ltd Supervision of transmission systems
WO2002067446A1 (fr) * 2001-02-22 2002-08-29 Fujitsu Limited Dispositif de filtrage supraconducteur et amplificateur de recepteur sans fil

Also Published As

Publication number Publication date
JPS5574247A (en) 1980-06-04

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