FR66789E - Installation télégraphique à onde porteuse électrique - Google Patents

Installation télégraphique à onde porteuse électrique

Info

Publication number
FR66789E
FR66789E FR66789DA FR66789E FR 66789 E FR66789 E FR 66789E FR 66789D A FR66789D A FR 66789DA FR 66789 E FR66789 E FR 66789E
Authority
FR
France
Prior art keywords
carrier wave
electric carrier
installation
wave telegraph
telegraph installation
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
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.)
British Telecommunications PLC
British Telecommunications Research Ltd
Original Assignee
British Telecommunications PLC
British Telecommunications Research Ltd
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 British Telecommunications PLC, British Telecommunications Research Ltd filed Critical British Telecommunications PLC
Application granted granted Critical
Publication of FR66789E publication Critical patent/FR66789E/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/002—Transmission systems not characterised by the medium used for transmission characterised by the use of a carrier modulation
    • H04B14/006—Angle modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/12—Modulator circuits; Transmitter circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)
FR66789D 1949-04-06 1954-09-09 Installation télégraphique à onde porteuse électrique Expired FR66789E (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1015978X 1949-04-06

Publications (1)

Publication Number Publication Date
FR66789E true FR66789E (fr) 1957-09-10

Family

ID=10868151

Family Applications (2)

Application Number Title Priority Date Filing Date
FR1015978D Expired FR1015978A (fr) 1949-04-06 1950-04-05 Installation télégraphique à onde porteuse électrique
FR66789D Expired FR66789E (fr) 1949-04-06 1954-09-09 Installation télégraphique à onde porteuse électrique

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR1015978D Expired FR1015978A (fr) 1949-04-06 1950-04-05 Installation télégraphique à onde porteuse électrique

Country Status (3)

Country Link
DE (1) DE958203C (fr)
FR (2) FR1015978A (fr)
NL (1) NL81987C (fr)

Also Published As

Publication number Publication date
FR1015978A (fr) 1952-10-29
NL81987C (fr) 1956-02-15
DE958203C (de) 1957-02-14

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