FR548930A - Improvements to the reception methods for CW radiotelegraph signals - Google Patents

Improvements to the reception methods for CW radiotelegraph signals

Info

Publication number
FR548930A
FR548930A FR548930DA FR548930A FR 548930 A FR548930 A FR 548930A FR 548930D A FR548930D A FR 548930DA FR 548930 A FR548930 A FR 548930A
Authority
FR
France
Prior art keywords
radiotelegraph
signals
reception methods
reception
methods
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.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi Co 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
Priority claimed from GB827721A external-priority patent/GB181799A/en
Priority claimed from US540451A external-priority patent/US1642173A/en
Application filed by Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Application granted granted Critical
Publication of FR548930A publication Critical patent/FR548930A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control
    • H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control
    • H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
    • H03J7/14—Controlling the magnetic state of inductor cores

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Superheterodyne Receivers (AREA)
FR548930D 1921-03-16 1922-03-14 Improvements to the reception methods for CW radiotelegraph signals Expired FR548930A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB827721A GB181799A (en) 1921-03-16 1921-03-16 Improvements in the reception of continuous wave wireless signals
US540451A US1642173A (en) 1921-03-16 1922-03-02 Radio signaling system
US30424A US1712051A (en) 1921-03-16 1925-05-15 Radio signaling system

Publications (1)

Publication Number Publication Date
FR548930A true FR548930A (en) 1923-01-29

Family

ID=27255182

Family Applications (1)

Application Number Title Priority Date Filing Date
FR548930D Expired FR548930A (en) 1921-03-16 1922-03-14 Improvements to the reception methods for CW radiotelegraph signals

Country Status (3)

Country Link
US (1) US1712051A (en)
FR (1) FR548930A (en)
NL (1) NL13571C (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR805703A (en) * 1935-05-03 1936-11-27 Rca Corp Automatic frequency control system for superheterodyne receiver
US2500356A (en) * 1943-02-24 1950-03-14 John H Homrighous Frequency control for oscillators
US2428264A (en) * 1943-04-27 1947-09-30 Rca Corp Frequency discriminator circuits
US2463533A (en) * 1944-10-14 1949-03-08 Submarine Signal Co Electrical impedance matching apparatus
US2612637A (en) * 1946-11-29 1952-09-30 Rines Robert Harvey Pulse-echo tracking system
US2562703A (en) * 1947-12-26 1951-07-31 Gen Electric Multiple channel radio receiving system
US2695358A (en) * 1952-04-03 1954-11-23 George B Bush Band centering automatic frequency control
US2822510A (en) * 1953-03-03 1958-02-04 Gerald S Epstein Series resonant frequency discriminator circuit
US2839684A (en) * 1954-05-06 1958-06-17 Cgs Lab Inc Automatic frequency control

Also Published As

Publication number Publication date
NL13571C (en)
US1712051A (en) 1929-05-07

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