FR821997A - Method of automatic adjustment of the level of transmission in telegraph installations by power lines - Google Patents

Method of automatic adjustment of the level of transmission in telegraph installations by power lines

Info

Publication number
FR821997A
FR821997A FR821997DA FR821997A FR 821997 A FR821997 A FR 821997A FR 821997D A FR821997D A FR 821997DA FR 821997 A FR821997 A FR 821997A
Authority
FR
France
Prior art keywords
transmission
level
power lines
automatic adjustment
telegraph
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
French (fr)
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
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 Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Application granted granted Critical
Publication of FR821997A publication Critical patent/FR821997A/en
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
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H04L27/08—Amplitude regulation arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Details Of Television Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Circuits Of Receivers In General (AREA)
FR821997D 1936-07-24 1937-05-19 Method of automatic adjustment of the level of transmission in telegraph installations by power lines Expired FR821997A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE482569X 1936-07-24

Publications (1)

Publication Number Publication Date
FR821997A true FR821997A (en) 1937-12-17

Family

ID=6542850

Family Applications (1)

Application Number Title Priority Date Filing Date
FR821997D Expired FR821997A (en) 1936-07-24 1937-05-19 Method of automatic adjustment of the level of transmission in telegraph installations by power lines

Country Status (3)

Country Link
US (1) US2235021A (en)
FR (1) FR821997A (en)
GB (1) GB482569A (en)

Also Published As

Publication number Publication date
US2235021A (en) 1941-03-18
GB482569A (en) 1938-03-31

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