GB548473A - Improvements in 4-wire terminating arrangements in electrical communication systems - Google Patents

Improvements in 4-wire terminating arrangements in electrical communication systems

Info

Publication number
GB548473A
GB548473A GB952041A GB952041A GB548473A GB 548473 A GB548473 A GB 548473A GB 952041 A GB952041 A GB 952041A GB 952041 A GB952041 A GB 952041A GB 548473 A GB548473 A GB 548473A
Authority
GB
United Kingdom
Prior art keywords
range
mod
way
modulators
wire
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
GB952041A
Other languages
English (en)
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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
Priority to BE439378D priority Critical patent/BE439378A/xx
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Priority to GB952041A priority patent/GB548473A/en
Priority to FR887180D priority patent/FR887180A/fr
Publication of GB548473A publication Critical patent/GB548473A/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)
GB952041A 1941-07-26 1941-07-26 Improvements in 4-wire terminating arrangements in electrical communication systems Expired GB548473A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE439378D BE439378A (enrdf_load_stackoverflow) 1941-07-26 1940-09-26
GB952041A GB548473A (en) 1941-07-26 1941-07-26 Improvements in 4-wire terminating arrangements in electrical communication systems
FR887180D FR887180A (fr) 1941-07-26 1941-12-11 Systèmes de communications électriques

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
GB548473A true GB548473A (en) 1942-10-12

Family

ID=9873551

Family Applications (1)

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

Country Status (3)

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

Also Published As

Publication number Publication date
FR887180A (fr) 1943-11-05
BE439378A (enrdf_load_stackoverflow) 1940-10-31

Similar Documents

Publication Publication Date Title
ES407164A1 (es) Perfeccionamientos en sistemas conmutadores de comunica- cion.
US2264396A (en) Power line carrier frequency telephone system
GB725915A (en) Communication system
GB645867A (en) Telecommunication exchange
GB548473A (en) Improvements in 4-wire terminating arrangements in electrical communication systems
US1559867A (en) Wave-transmission system
US1917960A (en) Four wire circuits
US2274535A (en) Carrier wave system
GB550912A (en) Reduction of cross-talk
US2370853A (en) Electrical carrier wave signaling system
US1550659A (en) Supervisory circuits for multiplex signaling
US2336627A (en) System for overcoming thermal agitation noise and inductive disturbance noises in carrier systems
US2585058A (en) Telephone radio link termination
US1983528A (en) Carrier line system
US3315036A (en) Resonant transfer time division multiplex system utilizing negative impedance amplification means
ES399050A1 (es) Mejoras en los circuitos de centrales automaticas privadas.
GB553220A (en) Carrier current communication systems
GB1250452A (enrdf_load_stackoverflow)
GB516989A (en) Improvements in or relating to electric wave transmission systems
GB513533A (en) Improvements in or relating to electric signalling systems
GB602229A (en) Improvements in or relating to multi-channel carrier communication systems
GB539948A (en) Improvements in or relating to carrier wave signalling systems
GB511902A (en) System for multiplex telephony using go and return paths in one star cable
GB695443A (en) Devices for obtaining high frequency circuits over high tension lines
GB1525100A (en) Communication network