GB439528A - Improvements in or relating to radio and like receivers - Google Patents

Improvements in or relating to radio and like receivers

Info

Publication number
GB439528A
GB439528A GB2904934A GB2904934A GB439528A GB 439528 A GB439528 A GB 439528A GB 2904934 A GB2904934 A GB 2904934A GB 2904934 A GB2904934 A GB 2904934A GB 439528 A GB439528 A GB 439528A
Authority
GB
United Kingdom
Prior art keywords
sideband
receiver
wireless
high fidelity
effected
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
GB2904934A
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.)
RCA Corp
Original Assignee
RCA Corp
Radio Corporation of America
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 RCA Corp, Radio Corporation of America filed Critical RCA Corp
Priority to GB2904934A priority Critical patent/GB439528A/en
Publication of GB439528A publication Critical patent/GB439528A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/14—Automatic detuning arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Circuits Of Receivers In General (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

439,528. Wireless receiving-apparatus. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London.-(Radio Corporation of America; 570, Lexington Avenue, New York, U.S.A.) Oct. 10, 1934, No. 29049. [Class 40 (v)] In a wireless receiver switching is provided for operation as a double sideband receiver with high selectivity or as a single sideband receiver with high fidelity and means are provided to ensure appropriate tuning. The Figure shows a superheterodyne receiver embodying a high frequency amplifier 1 frequency changer 3 and intermediate frequency amplifier 5 in which, with the switches 23, 55, 77 in the positions shown, high fidelity reception is obtained since the tuned circuits respond to the whole of one sideband. Operation of the switches gives high selectivity with some sideband cutting. The muting of the amplifier 5 is through a highly selective circuit and amplifying valves 81, 113, 117 which with high fidelity ensure tuning so that the received carrier lies at the side of the band of frequencies received. Delayed automatic volume control is effected by rectifier 83. In television reception increased gain is obtained by receiving only one sideband. Detuning may be effected by switched inductances, condensers, or couplings.
GB2904934A 1934-10-10 1934-10-10 Improvements in or relating to radio and like receivers Expired GB439528A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2904934A GB439528A (en) 1934-10-10 1934-10-10 Improvements in or relating to radio and like receivers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2904934A GB439528A (en) 1934-10-10 1934-10-10 Improvements in or relating to radio and like receivers

Publications (1)

Publication Number Publication Date
GB439528A true GB439528A (en) 1935-12-09

Family

ID=10285382

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2904934A Expired GB439528A (en) 1934-10-10 1934-10-10 Improvements in or relating to radio and like receivers

Country Status (1)

Country Link
GB (1) GB439528A (en)

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