FR642998A - Improvements to radiotelegraph communications systems - Google Patents

Improvements to radiotelegraph communications systems

Info

Publication number
FR642998A
FR642998A FR642998DA FR642998A FR 642998 A FR642998 A FR 642998A FR 642998D A FR642998D A FR 642998DA FR 642998 A FR642998 A FR 642998A
Authority
FR
France
Prior art keywords
radiotelegraph
communications systems
communications
systems
radiotelegraph communications
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.)
CBS Corp
Original Assignee
Westinghouse Electric and Manufacturing Co
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 Westinghouse Electric and Manufacturing Co filed Critical Westinghouse Electric and Manufacturing Co
Application granted granted Critical
Publication of FR642998A publication Critical patent/FR642998A/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
    • H04L27/04—Modulator circuits; Transmitter circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Electrophonic Musical Instruments (AREA)
FR642998D 1926-11-22 1927-10-25 Improvements to radiotelegraph communications systems Expired FR642998A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US149821A US1707271A (en) 1926-11-22 1926-11-22 Radio signaling means

Publications (1)

Publication Number Publication Date
FR642998A true FR642998A (en) 1928-09-07

Family

ID=22531932

Family Applications (1)

Application Number Title Priority Date Filing Date
FR642998D Expired FR642998A (en) 1926-11-22 1927-10-25 Improvements to radiotelegraph communications systems

Country Status (2)

Country Link
US (2) US1707271A (en)
FR (1) FR642998A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2538017A (en) * 1945-03-26 1951-01-16 Ernst H Krause Modulation-on-pulse control system

Also Published As

Publication number Publication date
US1707271A (en) 1929-04-02
USRE18895E (en) 1933-07-18

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