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 frequenciesInfo
- 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
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.
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) |
-
1959
- 1959-09-22 GB GB14280/61A patent/GB889931A/en not_active Expired
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