GB441691A - Improvements in or relating to the tuning of radio receivers - Google Patents

Improvements in or relating to the tuning of radio receivers

Info

Publication number
GB441691A
GB441691A GB2121034A GB2121034A GB441691A GB 441691 A GB441691 A GB 441691A GB 2121034 A GB2121034 A GB 2121034A GB 2121034 A GB2121034 A GB 2121034A GB 441691 A GB441691 A GB 441691A
Authority
GB
United Kingdom
Prior art keywords
tuning
receiver
sea
intermediate frequency
local 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
GB2121034A
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.)
EK Cole Ltd
Original Assignee
EK Cole 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 EK Cole Ltd filed Critical EK Cole Ltd
Priority to GB2121034A priority Critical patent/GB441691A/en
Publication of GB441691A publication Critical patent/GB441691A/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
    • H03J7/16—Automatic frequency control where the frequency control is accomplished by mechanical means, e.g. by a motor

Landscapes

  • Toys (AREA)

Abstract

441,691. Wireless receiving-apparatus. COLE, Ltd., E. K., Priory Crescent, Southendon-Sea, and MARTIN, A. W., 1, Thames Close, Leigh-on-Sea. July 20, 1934, No. 21210. [Class 40 (v)] In a superheterodyne receiver, the production of an untrue intermediate frequency causes a control current to flow to correct the tuning of the receiver. the magnitude of the control current increasing as the receiver approaches resonance and ceasing at a point near resonance. The Figure shows a local oscillator V3. Beats between the local oscillation and the intermediate frequency are rectified by a diode 9 and operate a relay 11 to control a motor 13 driving a condenser 14 in the local oscillator circuit.
GB2121034A 1934-07-20 1934-07-20 Improvements in or relating to the tuning of radio receivers Expired GB441691A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2121034A GB441691A (en) 1934-07-20 1934-07-20 Improvements in or relating to the tuning of radio receivers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2121034A GB441691A (en) 1934-07-20 1934-07-20 Improvements in or relating to the tuning of radio receivers

Publications (1)

Publication Number Publication Date
GB441691A true GB441691A (en) 1936-01-20

Family

ID=10159033

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2121034A Expired GB441691A (en) 1934-07-20 1934-07-20 Improvements in or relating to the tuning of radio receivers

Country Status (1)

Country Link
GB (1) GB441691A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2483409A (en) * 1942-12-08 1949-10-04 Int Standard Electric Corp Tuning arrangement for thermionic valve circuits

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2483409A (en) * 1942-12-08 1949-10-04 Int Standard Electric Corp Tuning arrangement for thermionic valve circuits

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