FR805703A - Automatic frequency control system for superheterodyne receiver - Google Patents

Automatic frequency control system for superheterodyne receiver

Info

Publication number
FR805703A
FR805703A FR805703DA FR805703A FR 805703 A FR805703 A FR 805703A FR 805703D A FR805703D A FR 805703DA FR 805703 A FR805703 A FR 805703A
Authority
FR
France
Prior art keywords
control system
frequency control
automatic frequency
superheterodyne receiver
superheterodyne
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.)
RCA Corp
Original Assignee
RCA Corp
Radio Corporation of America
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 US19563A external-priority patent/US2357984A/en
Application filed by RCA Corp, Radio Corporation of America filed Critical RCA Corp
Application granted granted Critical
Publication of FR805703A publication Critical patent/FR805703A/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
    • H03J7/042—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 with reactance tube
    • 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
    • H03J7/16—Automatic frequency control where the frequency control is accomplished by mechanical means, e.g. by a motor
FR805703D 1935-05-03 1936-04-27 Automatic frequency control system for superheterodyne receiver Expired FR805703A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US19563A US2357984A (en) 1935-05-03 1935-05-03 Automatic frequency control system
US528317A US2467345A (en) 1935-05-03 1944-03-27 Automatic frequency control system

Publications (1)

Publication Number Publication Date
FR805703A true FR805703A (en) 1936-11-27

Family

ID=26692338

Family Applications (1)

Application Number Title Priority Date Filing Date
FR805703D Expired FR805703A (en) 1935-05-03 1936-04-27 Automatic frequency control system for superheterodyne receiver

Country Status (4)

Country Link
US (1) US2467345A (en)
DE (1) DE944198C (en)
FR (1) FR805703A (en)
GB (2) GB474682A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE747411C (en) * 1936-04-03 1944-10-04 Hazeltine Corp Circuit for frequency control

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE764496C (en) * 1937-12-11 1953-03-16 Telefunken Gmbh Device for automatic sharpening for devices for receiving electromagnetic short waves, especially decimeter waves
BE477722A (en) * 1939-11-03
US2702343A (en) * 1949-01-06 1955-02-15 Rca Corp Piezoelectric crystal filter for exalted carrier and discriminator circuits

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE218574C (en) *
DE383448C (en) * 1923-10-13 Marconi Wireless Telegraph Co Receiving device for overlay reception
NL13571C (en) * 1921-03-16
FR593632A (en) * 1924-02-29 1925-08-28
DE475224C (en) * 1925-03-27 1929-04-20 Lloyd Quincy Slocumb Voting device at radio receiving stations
US1788533A (en) * 1927-03-28 1931-01-13 Bell Telephone Labor Inc Frequency-control system
DE518802C (en) * 1928-07-07 1931-02-19 Telefunken Gmbh Device for the simultaneous control of two oscillation circuits
GB327710A (en) * 1929-01-09 1930-04-09 Gramophone Co Ltd Improvements in or relating to tuning devices for wireless receivers
US1871741A (en) * 1929-01-30 1932-08-16 Rca Corp Constant beat frequency system
DE540339C (en) * 1929-05-11 1931-12-19 Telefunken Gmbh Variable impedance to control high frequency circuits
US2027291A (en) * 1929-06-13 1936-01-07 Gordon D Robinson Electric circuits for employing capacitative currents
US1968105A (en) * 1930-10-11 1934-07-31 Radio Corp Of American Amplifier system
FR725780A (en) * 1931-01-10 1932-05-18 Radio Electr Soc Fr Improvements to Reaction Devices Using Multiple Electrode Lamps and Applications
US2374265A (en) * 1934-07-25 1945-04-24 Murphy Radio Ltd Tuning of radio receivers
US2294100A (en) * 1935-02-04 1942-08-25 Rca Corp Automatic oscillator frequency control system
US2357984A (en) * 1935-05-03 1944-09-12 Rca Corp Automatic frequency control system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE747411C (en) * 1936-04-03 1944-10-04 Hazeltine Corp Circuit for frequency control

Also Published As

Publication number Publication date
DE944198C (en) 1956-06-07
US2467345A (en) 1949-04-12
GB484701A (en) 1938-05-05
GB474682A (en) 1937-11-04

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