FR2272545A1 - Remote controlled transmission change-over unit - has local oscillator and relays switching normal or safety circuits - Google Patents

Remote controlled transmission change-over unit - has local oscillator and relays switching normal or safety circuits

Info

Publication number
FR2272545A1
FR2272545A1 FR7417651A FR7417651A FR2272545A1 FR 2272545 A1 FR2272545 A1 FR 2272545A1 FR 7417651 A FR7417651 A FR 7417651A FR 7417651 A FR7417651 A FR 7417651A FR 2272545 A1 FR2272545 A1 FR 2272545A1
Authority
FR
France
Prior art keywords
circuit
normal
local oscillator
circuits
centre
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
FR7417651A
Other languages
English (en)
French (fr)
Other versions
FR2272545B1 (enExample
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.)
GUERET JACQUES
Original Assignee
GUERET JACQUES
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 GUERET JACQUES filed Critical GUERET JACQUES
Priority to FR7417651A priority Critical patent/FR2272545A1/fr
Publication of FR2272545A1 publication Critical patent/FR2272545A1/fr
Application granted granted Critical
Publication of FR2272545B1 publication Critical patent/FR2272545B1/fr
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
    • H04B1/74—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 for increasing reliability, e.g. using redundant or spare channels or apparatus

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)
  • Radio Relay Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
FR7417651A 1974-05-21 1974-05-21 Remote controlled transmission change-over unit - has local oscillator and relays switching normal or safety circuits Granted FR2272545A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7417651A FR2272545A1 (en) 1974-05-21 1974-05-21 Remote controlled transmission change-over unit - has local oscillator and relays switching normal or safety circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7417651A FR2272545A1 (en) 1974-05-21 1974-05-21 Remote controlled transmission change-over unit - has local oscillator and relays switching normal or safety circuits

Publications (2)

Publication Number Publication Date
FR2272545A1 true FR2272545A1 (en) 1975-12-19
FR2272545B1 FR2272545B1 (enExample) 1978-01-20

Family

ID=9139116

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7417651A Granted FR2272545A1 (en) 1974-05-21 1974-05-21 Remote controlled transmission change-over unit - has local oscillator and relays switching normal or safety circuits

Country Status (1)

Country Link
FR (1) FR2272545A1 (enExample)

Also Published As

Publication number Publication date
FR2272545B1 (enExample) 1978-01-20

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Legal Events

Date Code Title Description
ST Notification of lapse