GB582126A - Improvements in radio receivers - Google Patents

Improvements in radio receivers

Info

Publication number
GB582126A
GB582126A GB1013841A GB1013841A GB582126A GB 582126 A GB582126 A GB 582126A GB 1013841 A GB1013841 A GB 1013841A GB 1013841 A GB1013841 A GB 1013841A GB 582126 A GB582126 A GB 582126A
Authority
GB
United Kingdom
Prior art keywords
frequencies
detector
valve
radio
automatic
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
GB1013841A
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.)
Metropolitan Vickers Electrical Co Ltd
Original Assignee
Metropolitan Vickers Electrical 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 Metropolitan Vickers Electrical Co Ltd filed Critical Metropolitan Vickers Electrical Co Ltd
Priority to GB1013841A priority Critical patent/GB582126A/en
Publication of GB582126A publication Critical patent/GB582126A/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
    • H03J7/18—Automatic scanning over a band of frequencies
    • H03J7/32—Automatic scanning over a band of frequencies with simultaneous display of received frequencies, e.g. panoramic receivers

Landscapes

  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

582,126. Valve circuits for wireless reception. SCOLES. G..J., and METROPOLITAN-VICKERS ELECTRICAL CO.,Ltd. Sept. 8, 1941, No. 10138. [Class 40 (v)] In a panoramic radio receiver in which a wave-band is scanned by automatic variation of tuning to show the frequencies at which transmissions may be taking place, a quickacting automatic volume control is applied to the radio or intermediate frequency stages so that strong signals are prevented from occupying a considerable width on the cathode-ray screen and so masking neighbouring signal waves. The scanning reactor may be associated with the second oscillator of a supersonic heterodyne as described in Specification 582,125 and the intermediate frequencies are chosen as described in Specification 582,127, and the signal detector be associated with a limiter as described in Specification 582,129. The Figure shows a three-stage superheterodyne in which oscillators 01, 02 and 03 and mixers M1, M2 and M3 provide frequency changes. The A.V.C. control voltage is taken from the detector D which may be a biassed valve with a resistive anode load, the negative going voltages across which are fed to the controlled valves through a condenser and constant resistance-capacity networks of low time constant. Specifications 582,124, 582,128 and 582,130 also are referred to.
GB1013841A 1941-09-08 1941-09-08 Improvements in radio receivers Expired GB582126A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1013841A GB582126A (en) 1941-09-08 1941-09-08 Improvements in radio receivers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1013841A GB582126A (en) 1941-09-08 1941-09-08 Improvements in radio receivers

Publications (1)

Publication Number Publication Date
GB582126A true GB582126A (en) 1946-11-06

Family

ID=9962210

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1013841A Expired GB582126A (en) 1941-09-08 1941-09-08 Improvements in radio receivers

Country Status (1)

Country Link
GB (1) GB582126A (en)

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