GB615402A - Improvements in or relating to radio receivers - Google Patents

Improvements in or relating to radio receivers

Info

Publication number
GB615402A
GB615402A GB21986/47A GB2198647A GB615402A GB 615402 A GB615402 A GB 615402A GB 21986/47 A GB21986/47 A GB 21986/47A GB 2198647 A GB2198647 A GB 2198647A GB 615402 A GB615402 A GB 615402A
Authority
GB
United Kingdom
Prior art keywords
condenser
coil
intermediate frequency
sound
frequency
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
GB21986/47A
Other languages
English (en)
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.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi 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 Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Publication of GB615402A publication Critical patent/GB615402A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/34—Networks for connecting several sources or loads working on different frequencies or frequency bands, to a common load or source
    • H03H11/342—Networks for connecting several sources or loads working on different frequencies or frequency bands, to a common load or source particularly adapted for use in common antenna systems
    • 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
    • H04B1/16—Circuits
    • H04B1/1638—Special circuits to enhance selectivity of receivers not otherwise provided for
    • 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
    • H04B1/16—Circuits
    • H04B1/26—Circuits for superheterodyne receivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Amplifiers (AREA)
  • Circuits Of Receivers In General (AREA)
GB21986/47A 1938-10-07 1947-08-08 Improvements in or relating to radio receivers Expired GB615402A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US233711A US2221104A (en) 1938-10-07 1938-10-07 Television receiver

Publications (1)

Publication Number Publication Date
GB615402A true GB615402A (en) 1949-01-05

Family

ID=22878391

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21986/47A Expired GB615402A (en) 1938-10-07 1947-08-08 Improvements in or relating to radio receivers

Country Status (5)

Country Link
US (1) US2221104A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CH (1) CH213823A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR860593A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB615402A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
NL (1) NL62094C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Also Published As

Publication number Publication date
CH213823A (de) 1941-03-15
NL62094C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
US2221104A (en) 1940-11-12
FR860593A (fr) 1941-01-18

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