BE442117A - - Google Patents

Info

Publication number
BE442117A
BE442117A BE442117DA BE442117A BE 442117 A BE442117 A BE 442117A BE 442117D A BE442117D A BE 442117DA BE 442117 A BE442117 A BE 442117A
Authority
BE
Belgium
Application number
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.)
Publication of BE442117A publication Critical patent/BE442117A/xx

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
    • H03J7/18—Automatic scanning over a band of frequencies
    • H03J7/20—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element
    • H03J7/22—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element in which an automatic frequency control circuit is brought into action after the scanning action has been stopped
    • 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
    • H03J7/18—Automatic scanning over a band of frequencies
    • H03J7/20—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element
BE442117D 1940-02-29 BE442117A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US321378A US2283523A (en) 1940-02-29 1940-02-29 Scanning radio receiver

Publications (1)

Publication Number Publication Date
BE442117A true BE442117A (enrdf_load_stackoverflow)

Family

ID=23250368

Family Applications (2)

Application Number Title Priority Date Filing Date
BE442116D BE442116A (enrdf_load_stackoverflow) 1940-02-29
BE442117D BE442117A (enrdf_load_stackoverflow) 1940-02-29

Family Applications Before (1)

Application Number Title Priority Date Filing Date
BE442116D BE442116A (enrdf_load_stackoverflow) 1940-02-29

Country Status (4)

Country Link
US (1) US2283523A (enrdf_load_stackoverflow)
BE (2) BE442117A (enrdf_load_stackoverflow)
FR (1) FR882608A (enrdf_load_stackoverflow)
GB (1) GB549770A (enrdf_load_stackoverflow)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2444151A (en) * 1942-11-16 1948-06-29 Rca Corp Scanning receiver for detecting signals of unknown frequency
US2450018A (en) * 1943-05-07 1948-09-28 Standard Telephones Cables Ltd Radio monitoring system
US2490022A (en) * 1943-09-08 1949-12-06 Tung Sol Lamp Works Inc Secret signaling system
US2454265A (en) * 1943-11-06 1948-11-16 Sperry Corp Automatic frequency control system
US2627024A (en) * 1944-04-21 1953-01-27 Jr Persa R Bell Automatic frequency control
US2532872A (en) * 1944-05-26 1950-12-05 Honeywell Regulator Co Frequency responsive measuring and controlling apparatus
US2543072A (en) * 1944-06-09 1951-02-27 Sperry Corp Automatic range gate
US2470843A (en) * 1944-10-04 1949-05-24 Philco Corp Stop-on carrier tuner
US2486551A (en) * 1944-10-04 1949-11-01 Philco Corp Automatic tuning electric system
US2507735A (en) * 1944-11-02 1950-05-16 Rca Corp Automatic tuning control apparatus
US2704809A (en) * 1945-06-14 1955-03-22 Williams Frederic Calland Wireless signalling systems
US2693529A (en) * 1945-11-30 1954-11-02 Alvin M Marks Fundamental tuning device
BE474391A (enrdf_load_stackoverflow) * 1946-06-21
US2560312A (en) * 1947-10-03 1951-07-10 Philco Corp Tuning aid for radio receivers
US2660511A (en) * 1947-10-24 1953-11-24 Nielsen A C Co Lockout and recycling device for an apparatus for determining the listening habits of wave signal receiver users
US2660663A (en) * 1947-10-24 1953-11-24 Nielsen A C Co Search signal apparatus for determining the listening habits of wave signal receiverusers
US2510095A (en) * 1948-04-29 1950-06-06 Int Standard Electric Corp Automatic frequency control system
US2553368A (en) * 1950-01-07 1951-05-15 Philco Corp Automatic frequency control for television receivers
US2694141A (en) * 1951-12-22 1954-11-09 Bell Telephone Labor Inc Radiant energy signaling system
US2856519A (en) * 1952-10-11 1958-10-14 Gen Precision Lab Inc Automatic signal frequency tracker, with search and hold-during-fade provisions
US2891245A (en) * 1953-11-02 1959-06-16 John H Coogan Signal tracking device
US3041451A (en) * 1954-03-05 1962-06-26 Joseph T Laing Automatic frequency search and following receiver
US2882391A (en) * 1954-09-07 1959-04-14 Gen Motors Corp Electric radio tuner
US3701025A (en) * 1954-11-02 1972-10-24 Us Navy Selective signal tuning device
US2979706A (en) * 1956-07-02 1961-04-11 Avery H Simon Radio warning system
US2977465A (en) * 1956-12-24 1961-03-28 Raytheon Co Frequency-scanning radio receivers
US3068416A (en) * 1957-02-07 1962-12-11 Sperry Rand Corp Communication system
US2989622A (en) * 1958-12-29 1961-06-20 Bell Telephone Labor Inc Hybrid sideband frequency modulation system
JPS59153178A (ja) * 1983-02-21 1984-09-01 Advantest Corp 信号検出装置

Also Published As

Publication number Publication date
FR882608A (fr) 1943-06-09
BE442116A (enrdf_load_stackoverflow)
US2283523A (en) 1942-05-19
GB549770A (en) 1942-12-07

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