GB889931A - Improvements in or relating to telephone cables having coaxial pairs and balanced circuits for carrier frequencies - Google Patents

Improvements in or relating to telephone cables having coaxial pairs and balanced circuits for carrier frequencies

Info

Publication number
GB889931A
GB889931A GB14280/61A GB1428061A GB889931A GB 889931 A GB889931 A GB 889931A GB 14280/61 A GB14280/61 A GB 14280/61A GB 1428061 A GB1428061 A GB 1428061A GB 889931 A GB889931 A GB 889931A
Authority
GB
United Kingdom
Prior art keywords
pairs
carrier frequencies
quad
relating
coaxial pairs
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
GB14280/61A
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.)
Pirelli and C SpA
Original Assignee
Pirelli SpA
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 Pirelli SpA filed Critical Pirelli SpA
Publication of GB889931A publication Critical patent/GB889931A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/18—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
    • H01B11/20—Cables having a multiplicity of coaxial lines
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/18—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
    • H01B11/1891—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor comprising auxiliary conductors

Landscapes

  • Communication Cables (AREA)

Abstract

889,931. Cables. PIRELLI S.p.A. Sept. 22, 1959 [Nov. 26, 1958], No. 14280/61. Divided out of 889,930. Class 36. A composite telephone cable for carrier frequencies comprises seven elements of the same size, of which two are coaxial pairs 1 and 2 each with an insulating covering and one is an electromagnetically screened star-quad 3 with an insulating covering; the coaxial pairs and the quad being arranged along a diameter to form an electromagnetic barrier between two unscreened pairs 4, 5 and the remaining two unscreened pairs 6, 7. The screening of the quad preferably consists of a longitudinally applied copper tape, a helically wound steel tape and a further copper tape applied either helically or longitudinally. The insulation of the conductors may be paper and air, or expanded polyethylene. Specification 846,529 also is referred to.
GB14280/61A 1958-11-26 1959-09-22 Improvements in or relating to telephone cables having coaxial pairs and balanced circuits for carrier frequencies Expired GB889931A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT889931X 1958-11-26

Publications (1)

Publication Number Publication Date
GB889931A true GB889931A (en) 1962-02-21

Family

ID=11331344

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14280/61A Expired GB889931A (en) 1958-11-26 1959-09-22 Improvements in or relating to telephone cables having coaxial pairs and balanced circuits for carrier frequencies

Country Status (1)

Country Link
GB (1) GB889931A (en)

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