GB597674A - Improvements in and relating to radio receivers - Google Patents

Improvements in and relating to radio receivers

Info

Publication number
GB597674A
GB597674A GB2167945A GB2167945A GB597674A GB 597674 A GB597674 A GB 597674A GB 2167945 A GB2167945 A GB 2167945A GB 2167945 A GB2167945 A GB 2167945A GB 597674 A GB597674 A GB 597674A
Authority
GB
United Kingdom
Prior art keywords
condensers
inductances
wave
ganged
positions
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
GB2167945A
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.)
EK Cole Ltd
Original Assignee
EK Cole Ltd
Filing date
Publication date
Application filed by EK Cole Ltd filed Critical EK Cole Ltd
Publication of GB597674A publication Critical patent/GB597674A/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

Landscapes

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

Abstract

597,674. Radio receiving apparatus. COLE, Ltd., E. K., and BURNARD, C. L. Aug. 24, 1945, No. 21679. [Class 40 (v)] In a radio receiver with a number of continuous tuning ranges, the wave-range selecting switch includes an additional position in which predetermined wave-lengths may be selected under push-button control. In positions 1-6 of the ganged switch B, the set is tuned to short-wave ranges by means of the ganged variable inductances L3, 12 in conjunction with the shunt inductances L4-8 and L13-17 and condensers C12, 50 and C23, 28 respectively The positions 7 and 8 cover medum and long waves, using the fixed inductances L1, 11 and L2, 10 respectively and the ganged variable condensers C10, 11. In position 9 the condensers C10, 11 are replaced by the preset condensers C5-9 and inductances L18-22 as chosen by the push-button switches PB1-5. In a further position 10 the tuning means are disconnected and the grid of the valve V1 grounded to permit of gramophone reproduction.
GB2167945A 1945-08-24 Improvements in and relating to radio receivers Expired GB597674A (en)

Publications (1)

Publication Number Publication Date
GB597674A true GB597674A (en) 1948-01-30

Family

ID=1736376

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2167945A Expired GB597674A (en) 1945-08-24 Improvements in and relating to radio receivers

Country Status (1)

Country Link
GB (1) GB597674A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001076067A1 (en) * 2000-03-31 2001-10-11 Koninklijke Philips Electronics N.V. Narrow band am front end

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001076067A1 (en) * 2000-03-31 2001-10-11 Koninklijke Philips Electronics N.V. Narrow band am front end

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