CH265359A - Frequency-keyed telegraph transmitter. - Google Patents

Frequency-keyed telegraph transmitter.

Info

Publication number
CH265359A
CH265359A CH265359DA CH265359A CH 265359 A CH265359 A CH 265359A CH 265359D A CH265359D A CH 265359DA CH 265359 A CH265359 A CH 265359A
Authority
CH
Switzerland
Prior art keywords
frequency
telegraph transmitter
keyed
keyed telegraph
transmitter
Prior art date
Application number
Other languages
German (de)
Inventor
Incorporated Western E Company
Original Assignee
Western Electric 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 Western Electric Co filed Critical Western Electric Co
Publication of CH265359A publication Critical patent/CH265359A/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C1/00—Amplitude modulation
    • H03C1/52—Modulators in which carrier or one sideband is wholly or partially suppressed
    • H03C1/60—Modulators in which carrier or one sideband is wholly or partially suppressed with one sideband wholly or partially suppressed
    • 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)
CH265359D 1944-07-21 1947-12-30 Frequency-keyed telegraph transmitter. CH265359A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US545934A US2424971A (en) 1944-07-21 1944-07-21 Frequency-shift radio telegraph transmitting system

Publications (1)

Publication Number Publication Date
CH265359A true CH265359A (en) 1949-11-30

Family

ID=24178130

Family Applications (1)

Application Number Title Priority Date Filing Date
CH265359D CH265359A (en) 1944-07-21 1947-12-30 Frequency-keyed telegraph transmitter.

Country Status (6)

Country Link
US (1) US2424971A (en)
BE (1) BE480495A (en)
CH (1) CH265359A (en)
FR (1) FR957756A (en)
GB (1) GB645436A (en)
NL (1) NL67418C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1221667B (en) * 1963-01-03 1966-07-28 Telefunken Patent Method for generating a color carrier

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2596612A (en) * 1943-06-12 1952-05-13 Hartford Nat Bank & Trust Co Signal receiver for carrier-wave telephony systems
BE483326A (en) * 1946-11-02
US2483271A (en) * 1946-11-30 1949-09-27 Frederick W Frink Frequency modulation transmitter
US3274591A (en) * 1947-05-08 1966-09-20 Torrence H Chambers Phase rotation system for use in velocity cancellation moving target radar systems
US2635226A (en) * 1950-01-20 1953-04-14 Collins Radio Co Phase modulation system and apparatus
US2576429A (en) * 1950-01-31 1951-11-27 Jr Oswald G Villard Single side-band signal generator
US2797313A (en) * 1951-03-27 1957-06-25 Hoffman Electronics Corp Radio communication by neutral frequency deviation
US2678385A (en) * 1951-04-16 1954-05-11 Rca Corp Diversity receiver
US2659051A (en) * 1952-04-29 1953-11-10 John F Honey Carrier insertion
US2726368A (en) * 1952-08-16 1955-12-06 Bell Telephone Labor Inc Broad-band phase-shifting circuit
US2935692A (en) * 1954-03-08 1960-05-03 Nathaniel L Cohen Phase control system
DE961718C (en) * 1954-04-02 1957-04-11 Siemens Ag Method for frequency shift keying for the transmission of two messages, in particular for the double F 1 modulation of radio transmitters
US2927159A (en) * 1955-05-03 1960-03-01 Lab For Electronics Inc Frequency-shift keying
DE1066631B (en) * 1956-11-08

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1666206A (en) * 1925-01-15 1928-04-17 Western Electric Co Modulation system
US1831516A (en) * 1928-01-10 1931-11-10 Ralph B Stewart Modulating system and method
US1773116A (en) * 1928-01-24 1930-08-19 American Telephone & Telegraph Single-side-band system
US1935776A (en) * 1929-05-18 1933-11-21 Jr John Hays Hammond Side band reversal transmission system
FR39312E (en) * 1930-05-06 1931-10-12 Radio Electr Soc Fr Improvements in radio communication methods
US2198248A (en) * 1936-09-01 1940-04-23 Rca Corp Method of and means for communication
US2118917A (en) * 1936-09-03 1938-05-31 William G H Finch Dual tone telegraphy system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1221667B (en) * 1963-01-03 1966-07-28 Telefunken Patent Method for generating a color carrier

Also Published As

Publication number Publication date
US2424971A (en) 1947-08-05
NL67418C (en)
FR957756A (en) 1950-02-25
BE480495A (en)
GB645436A (en) 1950-11-01

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