JPS5768936A - Submarine divice with oscillator group - Google Patents

Submarine divice with oscillator group

Info

Publication number
JPS5768936A
JPS5768936A JP14597280A JP14597280A JPS5768936A JP S5768936 A JPS5768936 A JP S5768936A JP 14597280 A JP14597280 A JP 14597280A JP 14597280 A JP14597280 A JP 14597280A JP S5768936 A JPS5768936 A JP S5768936A
Authority
JP
Japan
Prior art keywords
submarine
devices
transmission
frequencies
low
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
JP14597280A
Other languages
Japanese (ja)
Inventor
Mamoru Kato
Eiji Aoki
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 JP14597280A priority Critical patent/JPS5768936A/en
Publication of JPS5768936A publication Critical patent/JPS5768936A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/46—Monitoring; Testing

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

PURPOSE:To measure the frequency characteristics of mis-alignment, by providing a submarine device having a plurality of oscillators producing different frequencies belonging to the same transmission frequency band, for a submarine coaxial relay system. CONSTITUTION:A plurality of oscillators generating frequencies of vacant band in low and high group of transmission band of submarine devices 3, 4 are contained in a pressure vessel, respectively. Frequencies F1'Fn' of the device 3 are provided in the transmission band of low and high groups, and the frequencies of the device 4. F1+DELTAF1-Fn+Fn, F1'+DELTAF1'-DELTAFn'+Fn are provided in low and high group transmission bands. The frequency characteristics of mis-alignment in sectionsI, II, III can be obtained, by receiving the oscillating frequency from a terminal station A and the devices 4, 3 at a terminal station B, transmission of opposite direction at the terminal station A, and making operation from each reception level. The devices 3, 4 can be obtained with low cost in relation to submarine relay devices and ocean equalizers.
JP14597280A 1980-10-17 1980-10-17 Submarine divice with oscillator group Pending JPS5768936A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14597280A JPS5768936A (en) 1980-10-17 1980-10-17 Submarine divice with oscillator group

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14597280A JPS5768936A (en) 1980-10-17 1980-10-17 Submarine divice with oscillator group

Publications (1)

Publication Number Publication Date
JPS5768936A true JPS5768936A (en) 1982-04-27

Family

ID=15397239

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14597280A Pending JPS5768936A (en) 1980-10-17 1980-10-17 Submarine divice with oscillator group

Country Status (1)

Country Link
JP (1) JPS5768936A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002067446A1 (en) * 2001-02-22 2002-08-29 Fujitsu Limited Superconducting filter device and wireless receiver amplifier

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002067446A1 (en) * 2001-02-22 2002-08-29 Fujitsu Limited Superconducting filter device and wireless receiver amplifier
US7058436B2 (en) 2001-02-22 2006-06-06 Fujitsu Limited Superconducting filter apparatus and wireless receiving amplifier having an abnormality discriminating circuit

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