GB846529A - Improvements in or relating to telephone cables with balanced circuits for carrier frequencies - Google Patents
Improvements in or relating to telephone cables with balanced circuits for carrier frequenciesInfo
- Publication number
- GB846529A GB846529A GB13372/58A GB1337258A GB846529A GB 846529 A GB846529 A GB 846529A GB 13372/58 A GB13372/58 A GB 13372/58A GB 1337258 A GB1337258 A GB 1337258A GB 846529 A GB846529 A GB 846529A
- Authority
- GB
- United Kingdom
- Prior art keywords
- quads
- unscreened
- screened
- pairs
- insulated
- 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
Landscapes
- Communication Cables (AREA)
Abstract
846,529. Cables. PIRELLI S.p.A. April 28, 1958 [July 11, 1957], No. 13372/58. Class 36. A carrier-frequency telephone cable having high attenuation of near-end cross-talk with transmission in both directions on the same frequency band comprises any number of startype quads and/or pairs with an even number of these quads and/or pairs provided with an electromagnetic screen wrapped with insulating tape, each insulated screen bearing on that adjacent to it and any unscreened quads or pairs being located on opposite sides of the screened quads. In Fig. 2 the quads 1, 2 are each provided with a screen S of longitudinal copper tapes wrapped with one or more steel tapes and an insulating wrapping of paper or plastics. The unscreened quads 3, 4 are laid up on opposite sides of the plane containing the axes of the abutting screened quads. Fig. 3 shows a cable having four screened quads 5-8 and five unscreened pairs 9-13. The conductors of the screened quads may be insulated with expanded polyethylene and those of the unscreened quads insulated with paper or expanded polyethylene.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT846529X | 1957-07-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB846529A true GB846529A (en) | 1960-08-31 |
Family
ID=11325343
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB13372/58A Expired GB846529A (en) | 1957-07-11 | 1958-04-28 | Improvements in or relating to telephone cables with balanced circuits for carrier frequencies |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB846529A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4491713A (en) * | 1981-10-28 | 1985-01-01 | Colt Industries Operating Corp. | Power and sensing cable arrangement for electrical discharge machining assembly |
-
1958
- 1958-04-28 GB GB13372/58A patent/GB846529A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4491713A (en) * | 1981-10-28 | 1985-01-01 | Colt Industries Operating Corp. | Power and sensing cable arrangement for electrical discharge machining assembly |
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