GB436870A - High frequency signalling systems - Google Patents

High frequency signalling systems

Info

Publication number
GB436870A
GB436870A GB11803/34A GB1180334A GB436870A GB 436870 A GB436870 A GB 436870A GB 11803/34 A GB11803/34 A GB 11803/34A GB 1180334 A GB1180334 A GB 1180334A GB 436870 A GB436870 A GB 436870A
Authority
GB
United Kingdom
Prior art keywords
lines
high frequency
signalling systems
voice
frequency signalling
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
GB11803/34A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB436870A publication Critical patent/GB436870A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

436,870. Two - way transmission. STANDARD TELEPHONES & CABLES, Ltd., 63, Aldwych, London.-(Assignees of Wilson, I. G. ; 35, Pierrepont Street, Brooklyn, New York, U.S.A.) April 19, 1934, No. 11803. Convention date, June 1, 1933. [Class 40 (iv)] [See also Group XL] Single-channel loaded voice frequency lines 11 ... 14 are paired with multiplex non- loaded carrier lines 10, 20 for four-wire working. The carrier lines are preferably spaced apart in the cable so as to be shielded from each other by a number of voice-frequency lines.
GB11803/34A 1933-06-01 1934-04-19 High frequency signalling systems Expired GB436870A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US673842A US1974090A (en) 1933-06-01 1933-06-01 Multiplex signaling system

Publications (1)

Publication Number Publication Date
GB436870A true GB436870A (en) 1935-10-21

Family

ID=24704315

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11803/34A Expired GB436870A (en) 1933-06-01 1934-04-19 High frequency signalling systems

Country Status (5)

Country Link
US (1) US1974090A (en)
DE (1) DE682065C (en)
FR (1) FR773796A (en)
GB (1) GB436870A (en)
NL (1) NL38792C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3383464A (en) * 1962-11-29 1968-05-14 Siemens Ag Teleprinter system with plural forward channels and common time-division-multiplexedreturn channel

Also Published As

Publication number Publication date
US1974090A (en) 1934-09-18
DE682065C (en) 1939-10-07
NL38792C (en)
FR773796A (en) 1934-11-26

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