ZA765273B - Improvements in or relating to equivalent four-wire carrier frequency systems - Google Patents

Improvements in or relating to equivalent four-wire carrier frequency systems

Info

Publication number
ZA765273B
ZA765273B ZA00765273A ZA765273A ZA765273B ZA 765273 B ZA765273 B ZA 765273B ZA 00765273 A ZA00765273 A ZA 00765273A ZA 765273 A ZA765273 A ZA 765273A ZA 765273 B ZA765273 B ZA 765273B
Authority
ZA
South Africa
Prior art keywords
relating
equivalent
carrier frequency
wire carrier
frequency systems
Prior art date
Application number
ZA00765273A
Other languages
English (en)
Inventor
S Friedrich
H Krahmer
Original Assignee
Tekade Felten & Guilleaume
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 Tekade Felten & Guilleaume filed Critical Tekade Felten & Guilleaume
Publication of ZA765273B publication Critical patent/ZA765273B/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/14—Arrangements providing for calling or supervisory signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/04—Frequency-transposition arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
ZA00765273A 1975-09-30 1976-09-02 Improvements in or relating to equivalent four-wire carrier frequency systems ZA765273B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2543492A DE2543492C3 (de) 1975-09-30 1975-09-30 Trägerfrequenzsystem in Zweidraht-Getrenntlage

Publications (1)

Publication Number Publication Date
ZA765273B true ZA765273B (en) 1978-01-25

Family

ID=5957788

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA00765273A ZA765273B (en) 1975-09-30 1976-09-02 Improvements in or relating to equivalent four-wire carrier frequency systems

Country Status (9)

Country Link
AT (1) AT356181B (de)
AU (1) AU503654B2 (de)
BE (1) BE846549A (de)
CH (1) CH610163A5 (de)
DE (1) DE2543492C3 (de)
IT (1) IT1076944B (de)
LU (1) LU75906A1 (de)
NL (1) NL7608600A (de)
ZA (1) ZA765273B (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2718232C3 (de) * 1977-04-23 1981-03-19 TE KA DE Felten & Guilleaume Fernmeldeanlagen GmbH, 8500 Nürnberg Trägerfrequenzsystem in Zweidraht-Getrenntlage
CA1159972A (en) * 1980-05-15 1984-01-03 Zdzistaw A. A. Krajewski 2-wire frequency division multiplex system
DE4014132A1 (de) * 1990-05-02 1991-11-14 Fraunhofer Ges Forschung Sprachuebertragungssystem

Also Published As

Publication number Publication date
AU503654B2 (en) 1979-09-13
NL7608600A (nl) 1977-04-01
DE2543492B2 (de) 1977-09-22
BE846549A (fr) 1977-01-17
LU75906A1 (de) 1977-05-11
AT356181B (de) 1980-04-10
IT1076944B (it) 1985-04-27
DE2543492A1 (de) 1977-03-31
ATA714576A (de) 1979-09-15
DE2543492C3 (de) 1980-09-25
AU1788476A (en) 1978-03-23
CH610163A5 (en) 1979-03-30

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