GB533072A - Improvements in radio receivers - Google Patents

Improvements in radio receivers

Info

Publication number
GB533072A
GB533072A GB2771239A GB2771239A GB533072A GB 533072 A GB533072 A GB 533072A GB 2771239 A GB2771239 A GB 2771239A GB 2771239 A GB2771239 A GB 2771239A GB 533072 A GB533072 A GB 533072A
Authority
GB
United Kingdom
Prior art keywords
tracking
plates
superheterodyne
circuits
oscillator
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
GB2771239A
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.)
GEOFFREY JOHN REDFERN
RADIO GRAMOPHONE DEV Co L
Original Assignee
GEOFFREY JOHN REDFERN
RADIO GRAMOPHONE DEV Co L
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 GEOFFREY JOHN REDFERN, RADIO GRAMOPHONE DEV Co L filed Critical GEOFFREY JOHN REDFERN
Priority to GB2771239A priority Critical patent/GB533072A/en
Publication of GB533072A publication Critical patent/GB533072A/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

  • Superheterodyne Receivers (AREA)
  • Circuits Of Receivers In General (AREA)
  • Electric Clocks (AREA)

Abstract

533,072. Superheterodyne circuits for wireless reception. RADIO GRAMOPHONE DEVELOPMENT. CO., Ltd., and REDFERN, G. J. Oct. 12, 1939, No. 27712. [Class 40 (v)] [Also in Group XXXVI] In a superheterodyne receiver the tracking obtained by the usual trimming and tracking condensers is improved by shaping the plates of the oscillator condenser so that near the ends of the tuning range the capacity is increased more rapidly. The dotted curve shows the modification of the oscillator plate when log. law shaped plates are used for the signal tuned circuits and correct tracking at 10, 90 and 180 degrees is obtained by known methods, other forms of plates may be used and the arrangement is stated to operate on all wavebands.
GB2771239A 1939-10-12 1939-10-12 Improvements in radio receivers Expired GB533072A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2771239A GB533072A (en) 1939-10-12 1939-10-12 Improvements in radio receivers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2771239A GB533072A (en) 1939-10-12 1939-10-12 Improvements in radio receivers

Publications (1)

Publication Number Publication Date
GB533072A true GB533072A (en) 1941-02-05

Family

ID=10264067

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2771239A Expired GB533072A (en) 1939-10-12 1939-10-12 Improvements in radio receivers

Country Status (1)

Country Link
GB (1) GB533072A (en)

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