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GB327710A - Improvements in or relating to tuning devices for wireless receivers - Google Patents

Improvements in or relating to tuning devices for wireless receivers

Info

Publication number
GB327710A
GB327710A GB844/29A GB84429A GB327710A GB 327710 A GB327710 A GB 327710A GB 844/29 A GB844/29 A GB 844/29A GB 84429 A GB84429 A GB 84429A GB 327710 A GB327710 A GB 327710A
Authority
GB
United Kingdom
Prior art keywords
inductance
circuits
relating
wireless receivers
tuning devices
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
GB844/29A
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.)
CHRISTOPHER EDMUND GERVASE BAI
Parlophone Records Ltd
Original Assignee
CHRISTOPHER EDMUND GERVASE BAI
Gramophone 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
Application filed by CHRISTOPHER EDMUND GERVASE BAI, Gramophone Co Ltd filed Critical CHRISTOPHER EDMUND GERVASE BAI
Priority to GB844/29A priority Critical patent/GB327710A/en
Priority to FR685005D priority patent/FR685005A/en
Priority to US418930A priority patent/US1912616A/en
Publication of GB327710A publication Critical patent/GB327710A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/28—Continuous tuning of more than one resonant circuit simultaneously, the tuning frequencies of the circuits having a substantially constant difference throughout the tuning range

Landscapes

  • Filters And Equalizers (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

327,710. Gramophone Co., Ltd., and Bailey, C. E. G. Jan. 9, 1929. Thermionic heterodyne receivers.-In a supersonic heterodyne receiver embodying two tunable circuits with variable condensers 3, 6 having interconnected tuning-controls, one circuit is tuned to the frequency of received oscillations and the other tunes a local generator 7, and a compensating variable inductance 2 in one of the circuits is used to equalize the inductance of the two circuits. The variable inductance is in series with a frame aerial 1 or an inductance 5 (Fig. 2, not shown).
GB844/29A 1929-01-09 1929-01-09 Improvements in or relating to tuning devices for wireless receivers Expired GB327710A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB844/29A GB327710A (en) 1929-01-09 1929-01-09 Improvements in or relating to tuning devices for wireless receivers
FR685005D FR685005A (en) 1929-01-09 1929-11-15 Tuning device for receiving stations
US418930A US1912616A (en) 1929-01-09 1930-01-06 Tuning device for wireless receivers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB844/29A GB327710A (en) 1929-01-09 1929-01-09 Improvements in or relating to tuning devices for wireless receivers

Publications (1)

Publication Number Publication Date
GB327710A true GB327710A (en) 1930-04-09

Family

ID=9711435

Family Applications (1)

Application Number Title Priority Date Filing Date
GB844/29A Expired GB327710A (en) 1929-01-09 1929-01-09 Improvements in or relating to tuning devices for wireless receivers

Country Status (3)

Country Link
US (1) US1912616A (en)
FR (1) FR685005A (en)
GB (1) GB327710A (en)

Families Citing this family (7)

* 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
DE970231C (en) * 1939-10-16 1958-08-28 Philips Nv Broadcast radio with spread spectrum in one or more shortwave bands
FR957376A (en) * 1940-07-09 1950-02-18
DE970584C (en) * 1940-09-01 1958-10-09 Georg Von Schaub Tuning arrangement with band spreading for several shortwave bands
DE761144C (en) * 1941-01-27 1952-11-10 Telefunken Gmbh Receiver with spread spectrum in the shortwave range
BE493901A (en) * 1949-02-16
US3249875A (en) * 1961-03-29 1966-05-03 Motorola Inc Radio receiver

Also Published As

Publication number Publication date
FR685005A (en) 1930-07-03
US1912616A (en) 1933-06-06

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