GB983935A - Improvements in or relating to submarine cable repeaters - Google Patents
Improvements in or relating to submarine cable repeatersInfo
- Publication number
- GB983935A GB983935A GB3916661A GB3916661A GB983935A GB 983935 A GB983935 A GB 983935A GB 3916661 A GB3916661 A GB 3916661A GB 3916661 A GB3916661 A GB 3916661A GB 983935 A GB983935 A GB 983935A
- Authority
- GB
- United Kingdom
- Prior art keywords
- network
- repeater
- attenuation
- temperature
- frequency
- 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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/04—Control of transmission; Equalising
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/36—Repeater circuits
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
983,935. Automatic volume control. SUBMARINE CABLES Ltd. Oct. 25, 1962 [Nov. 1, 1961], No. 39166/61. Drawings to Specification. Heading H4R. In a submarine repeater, the feedback path of the amplifier consists of a network which simulates the attenuation of a section of the cable and its variation with temperature and frequency. A length of cable has its attenuation proportional to the square root of the frequency and its temperature coefficient of attenuation half of the temperature coefficient of resistance of the metal of which it is made. A ladder network of series resistors and shunt capacitors also has these characteristics and if this network is included in the feedback path of a repeater amplifier it will compensate for the changes in attenuation of the cable due to variations in frequency and sea temperature. The construction of a repeater is described in which the valves are surrounded by heat conducting members connected to a heat sink held in contact with the repeater housing, while the feedback network is enclosed in a copper box connected to a second heat sink also held in contact with the repeater housing so that the network is kept at sea temperature. The resistors of the network are wire-wound components preferably made of platinum.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3916661A GB983935A (en) | 1961-11-01 | 1961-11-01 | Improvements in or relating to submarine cable repeaters |
DE1962S0082261 DE1206485B (en) | 1961-11-01 | 1962-10-31 | Amplifier for submarine cables |
FR914110A FR1337718A (en) | 1961-11-01 | 1962-10-31 | Repeaters or amplifiers usable in particular in submarine cables |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3916661A GB983935A (en) | 1961-11-01 | 1961-11-01 | Improvements in or relating to submarine cable repeaters |
Publications (1)
Publication Number | Publication Date |
---|---|
GB983935A true GB983935A (en) | 1965-02-24 |
Family
ID=10408037
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3916661A Expired GB983935A (en) | 1961-11-01 | 1961-11-01 | Improvements in or relating to submarine cable repeaters |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE1206485B (en) |
FR (1) | FR1337718A (en) |
GB (1) | GB983935A (en) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2116600A (en) * | 1935-04-25 | 1938-05-10 | Bell Telephone Labor Inc | Electrical transmission control |
US2098968A (en) * | 1935-06-14 | 1937-11-16 | Bell Telephone Labor Inc | Transmission regulation |
US2151821A (en) * | 1937-05-15 | 1939-03-28 | Bell Telephone Labor Inc | Transmission regulation |
US2272735A (en) * | 1940-05-11 | 1942-02-10 | Bell Telephone Labor Inc | Transmission system |
GB853771A (en) * | 1957-09-17 | 1960-11-09 | British Telecomm Res Ltd | Improvements in or relating to automatic gain regulators for carrier current telecommunication systems |
-
1961
- 1961-11-01 GB GB3916661A patent/GB983935A/en not_active Expired
-
1962
- 1962-10-31 DE DE1962S0082261 patent/DE1206485B/en active Pending
- 1962-10-31 FR FR914110A patent/FR1337718A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR1337718A (en) | 1963-09-13 |
DE1206485B (en) | 1965-12-09 |
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