GB543777A - Improvements relating to tuning mechanism for radio receivers - Google Patents

Improvements relating to tuning mechanism for radio receivers

Info

Publication number
GB543777A
GB543777A GB1402040A GB1402040A GB543777A GB 543777 A GB543777 A GB 543777A GB 1402040 A GB1402040 A GB 1402040A GB 1402040 A GB1402040 A GB 1402040A GB 543777 A GB543777 A GB 543777A
Authority
GB
United Kingdom
Prior art keywords
inductances
sets
alternatively
serve
push
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
GB1402040A
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.)
KEITH INGLIS JONES
AC Cossor Ltd
Original Assignee
KEITH INGLIS JONES
AC Cossor 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 KEITH INGLIS JONES, AC Cossor Ltd filed Critical KEITH INGLIS JONES
Priority to GB1402040A priority Critical patent/GB543777A/en
Publication of GB543777A publication Critical patent/GB543777A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/24—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection
    • H03J5/242—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection used exclusively for band selection

Landscapes

  • Structure Of Receivers (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

543,777. Adjusting wireless receiving sets. COSSOR, Ltd., A. C., BEDFORD, L. H., JONES, K. I., and KNIGHT, W. A. Sept. 9, 1940, No. 14020. [Class 40 (v)] [Also in Group XXXVI] A broadcast receiver has a plurality of ganged sets of variable tuning inductances corresponding to the several wave ranges, the movable elements of each set of inductances being mechanically independent but being associated with an indicator dial, and means are provided to switch the sets of inductances alternatively into the operative circuits of the receiver. Each set of inductances may have an individual tuning knob and an appropriately coloured scale, in which case a set of push-buttons serve to connect the appropriate set in circuit. Alternatively the individual knobs may be axially movable so as to serve also as push buttons. In another arrangement a single knob controls all the sets of inductances by means of selective clutching arrangements operated by push buttons which also effect the necessary electrical connections.
GB1402040A 1940-09-09 1940-09-09 Improvements relating to tuning mechanism for radio receivers Expired GB543777A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1402040A GB543777A (en) 1940-09-09 1940-09-09 Improvements relating to tuning mechanism for radio receivers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1402040A GB543777A (en) 1940-09-09 1940-09-09 Improvements relating to tuning mechanism for radio receivers

Publications (1)

Publication Number Publication Date
GB543777A true GB543777A (en) 1942-03-12

Family

ID=10033524

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1402040A Expired GB543777A (en) 1940-09-09 1940-09-09 Improvements relating to tuning mechanism for radio receivers

Country Status (1)

Country Link
GB (1) GB543777A (en)

Similar Documents

Publication Publication Date Title
GB543777A (en) Improvements relating to tuning mechanism for radio receivers
GB538389A (en) Improvements in or relating to wireless receivers with bandspread tuning
US2211041A (en) Tuning control device for radio receiviers and the like
US2159105A (en) Oscillator for multiple wave band receivers
USRE22087E (en) Tuning control device for radio
GB543639A (en) Improvements in or relating to the control mechanism of wireless receivers
US2675467A (en) Time controlled radio frequency preselection apparatus
US2855507A (en) Radio tuning keyboard with interlocking station and band keys with independently depressable band keys
GB566135A (en) Improvements in or relating to radio-receivers adapted to be automatically tuned to a number of pre-determined stations
JPS52126117A (en) Input tuning circuit
GB542352A (en) Improvements in time-controlled switching and tuning arrangements for radio receivers
GB582128A (en) Improvements in tunable radio receivers
GB654777A (en) Improvements in or relating to electric push-button switches
GB509511A (en) Improvements relating to the tuning of radio receivers
GB580905A (en) Improvements relating to the use and to the control of radio-receiving sets
GB680824A (en) Improvements relating to band-pass coupling circuits
GB237638A (en) Improvements in or relating to reception apparatus for wireless telephony and the like
GB595226A (en) Improvements in push button switches
GB358213A (en) Improvements relating to broadcast receiving apparatus
JPS545316A (en) Amplifier selector
GB1204020A (en) Improvements in and relating to electric charge amplifiers
GB1053633A (en)
GB674916A (en) Improvements in or relating to radio receiving and transmitting apparatus
GB575329A (en) Improvements relating to wireless receivers
GB835663A (en) Improvements in or relating to means for adjusting the tones in electronic musical instruments