GB532316A - Radio receivers and the like - Google Patents

Radio receivers and the like

Info

Publication number
GB532316A
GB532316A GB2074339A GB2074339A GB532316A GB 532316 A GB532316 A GB 532316A GB 2074339 A GB2074339 A GB 2074339A GB 2074339 A GB2074339 A GB 2074339A GB 532316 A GB532316 A GB 532316A
Authority
GB
United Kingdom
Prior art keywords
aerial
radio
valve
waves
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
GB2074339A
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.)
Philco Radio and Television Corp
Original Assignee
Philco Radio and Television Corp
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 Philco Radio and Television Corp filed Critical Philco Radio and Television Corp
Priority to GB2074339A priority Critical patent/GB532316A/en
Publication of GB532316A publication Critical patent/GB532316A/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
    • H03J5/26—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 operated by hand
    • H03J5/32—Stationary tuning circuits or elements selected by push-button

Abstract

532,316. Superheterodyne circuits. THORNTON, A. A. (Philco Radio & Television Corporation). July 17, 1939, No. 20743. [Class 40 (v)] A superheterodyne receiver using a small loop aerial 1 or 2, e.g. in a car radio, has a radio frequency amplifier V1 with an input tunable over at least two wave ranges, and a broad-band untuned coupling 14 ... 18 connecting it to the frequency converter V2. Thereafter the intermediate frequency is amplified in valve V3 and detected in diode V4. Ganged switches S, push buttons P and condensers C adapt the set for push-button or condenser tuning on normal broadcast waves with aerial 1 and for condenser tuning on short waves with aerial 2. The inductance 14, by resonating with the interelectrode capacity of the valve V1 tends to enhance the coupling effect on the short waves.
GB2074339A 1939-07-17 1939-07-17 Radio receivers and the like Expired GB532316A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2074339A GB532316A (en) 1939-07-17 1939-07-17 Radio receivers and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2074339A GB532316A (en) 1939-07-17 1939-07-17 Radio receivers and the like

Publications (1)

Publication Number Publication Date
GB532316A true GB532316A (en) 1941-01-22

Family

ID=10150914

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2074339A Expired GB532316A (en) 1939-07-17 1939-07-17 Radio receivers and the like

Country Status (1)

Country Link
GB (1) GB532316A (en)

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