GB630991A - Improvements in radio-receivers with band-spreading - Google Patents

Improvements in radio-receivers with band-spreading

Info

Publication number
GB630991A
GB630991A GB4172/47A GB417247A GB630991A GB 630991 A GB630991 A GB 630991A GB 4172/47 A GB4172/47 A GB 4172/47A GB 417247 A GB417247 A GB 417247A GB 630991 A GB630991 A GB 630991A
Authority
GB
United Kingdom
Prior art keywords
auxiliary
tuning
bandspreading
inductance
spread
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
GB4172/47A
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.)
Philips Lamps Ltd
Koninklijke Philips NV
Original Assignee
Philips Lamps Ltd
Philips Gloeilampenfabrieken NV
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 Philips Lamps Ltd, Philips Gloeilampenfabrieken NV filed Critical Philips Lamps Ltd
Publication of GB630991A publication Critical patent/GB630991A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/10—Circuit arrangements for fine tuning, e.g. bandspreading

Landscapes

  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Coils Or Transformers For Communication (AREA)
GB4172/47A 1944-03-16 1947-02-13 Improvements in radio-receivers with band-spreading Expired GB630991A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL250542X 1944-03-16

Publications (1)

Publication Number Publication Date
GB630991A true GB630991A (en) 1949-10-25

Family

ID=19781082

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4172/47A Expired GB630991A (en) 1944-03-16 1947-02-13 Improvements in radio-receivers with band-spreading

Country Status (5)

Country Link
US (1) US2495624A (OSRAM)
BE (1) BE463073A (OSRAM)
CH (1) CH250542A (OSRAM)
DE (1) DE957137C (OSRAM)
GB (1) GB630991A (OSRAM)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE973181C (de) * 1944-06-27 1959-12-17 Georg Von Dipl-Ing Schaub Abstimmanordnung fuer kurze Wellen

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL38349C (OSRAM) *
DE218574C (OSRAM) *
DE513307C (de) * 1930-11-26 Siemens & Halske Akt Ges Drehkondensator mit mechanischen Rastpunkten
BE400555A (OSRAM) * 1933-01-02
US2129026A (en) * 1933-03-09 1938-09-06 Rca Corp Tuning range adjustment device
NL55445C (OSRAM) * 1939-02-28
US2288236A (en) * 1940-04-12 1942-06-30 Amalgamated Wireless Australas Tuning arrangement for radio signaling apparatus
US2312211A (en) * 1940-09-03 1943-02-23 Belmont Radio Corp Tuning system
BE444931A (OSRAM) * 1941-03-22
GB552403A (en) * 1941-10-03 1943-04-06 Philips Nv Improvements in or relating to means for tuning wireless sets
GB551064A (en) * 1941-12-18 1943-02-05 Philips Nv Improvements in or relating to radio receivers

Also Published As

Publication number Publication date
US2495624A (en) 1950-01-24
DE957137C (de) 1957-01-31
BE463073A (OSRAM)
CH250542A (de) 1947-08-31

Similar Documents

Publication Publication Date Title
ES353242A1 (es) Una disposicion de circuito para sintonizar un receptor.
GB546141A (en) Improvements in or relating to wireless receivers
US2333990A (en) Tuning indication system
GB630991A (en) Improvements in radio-receivers with band-spreading
GB571787A (en) Improvements in variable permeability tuning arrangements
US2296882A (en) Crystal bridge circuit for radio amplifiers
US2109219A (en) Antenna coupling device for five meter receivers
US2230557A (en) Multiband superheterodyne receiver
US2664510A (en) Frequency multiplier circuit
GB551064A (en) Improvements in or relating to radio receivers
GB542395A (en) Improvements in the tuning arrangements of radio receivers
US1860897A (en) Modulated oscillator
GB621267A (en) Improvements in or relating to wireless receivers with bandspreading
GB578960A (en) Improvements in tracking arrangements for electrical circuits of variable resonance
GB487700A (en) Improvements in and relating to wireless receiving systems and the like
US1688842A (en) Radio signaling circuits
US1829419A (en) Frequency multiplication
SU68899A1 (ru) Супергетеродинный радиоприемник
US1931677A (en) Variable condenser
GB616573A (en) Improvements in or relating to radio-receivers
GB617312A (en) Improvements in or relating to superheterodyne radio-receivers with image-frequency suppression
ES244055A1 (es) Preselector de resonancia para radioaudiciën
GB269259A (en) Improvements in and relating to electric measuring instruments
GB580077A (en) Radio receivers
GB551231A (en) Improvements in or relating to wireless aerial coupling circuits