FR887180A - Electrical communications systems - Google Patents

Electrical communications systems

Info

Publication number
FR887180A
FR887180A FR887180DA FR887180A FR 887180 A FR887180 A FR 887180A FR 887180D A FR887180D A FR 887180DA FR 887180 A FR887180 A FR 887180A
Authority
FR
France
Prior art keywords
communications systems
electrical communications
electrical
systems
communications
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
Other languages
French (fr)
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.)
Thales SA
Original Assignee
Le Materiel Telephonique Thomson CSF
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 Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Application granted granted Critical
Publication of FR887180A publication Critical patent/FR887180A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/36—Repeater circuits
    • H04B3/38—Repeater circuits for signals in two different frequency ranges transmitted in opposite directions over the same transmission path

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
FR887180D 1941-07-26 1941-12-11 Electrical communications systems Expired FR887180A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB952041A GB548473A (en) 1941-07-26 1941-07-26 Improvements in 4-wire terminating arrangements in electrical communication systems

Publications (1)

Publication Number Publication Date
FR887180A true FR887180A (en) 1943-11-05

Family

ID=9873551

Family Applications (1)

Application Number Title Priority Date Filing Date
FR887180D Expired FR887180A (en) 1941-07-26 1941-12-11 Electrical communications systems

Country Status (3)

Country Link
BE (1) BE439378A (en)
FR (1) FR887180A (en)
GB (1) GB548473A (en)

Also Published As

Publication number Publication date
GB548473A (en) 1942-10-12
BE439378A (en) 1940-10-31

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