GB485642A - Improvements in and relating to radio transmission systems - Google Patents

Improvements in and relating to radio transmission systems

Info

Publication number
GB485642A
GB485642A GB22708/36A GB2270836A GB485642A GB 485642 A GB485642 A GB 485642A GB 22708/36 A GB22708/36 A GB 22708/36A GB 2270836 A GB2270836 A GB 2270836A GB 485642 A GB485642 A GB 485642A
Authority
GB
United Kingdom
Prior art keywords
grids
modulation
supply
modulating
source
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
GB22708/36A
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.)
Wired Radio Inc
Original Assignee
Wired Radio Inc
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 Wired Radio Inc filed Critical Wired Radio Inc
Publication of GB485642A publication Critical patent/GB485642A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C1/00—Amplitude modulation
    • H03C1/52—Modulators in which carrier or one sideband is wholly or partially suppressed

Abstract

485,642. Modulating systems. WIRED RADIO, Inc. Aug. 18, 1936, No. 22708. Void. Convention date, Dec. 4, 1935. [Class 40 (v)] Modulation of H.F. with carrier suppression is obtained by a modulating stage consisting of a pair of screened pentode valves 5, 6 the control grids of which are supplied with H.F. in phase opposition from a source 1, and the suppressor grids 7, 8 with audio-frequency modulating signals in phase opposition from a source 13. The anodes are connected to a resistance 18 on which an adjustable tapping is connected through an output transformer 17 to H.T. supply 15. The screen grids are also connected to the H.T. supply. The valve characteristics and operating potentials are so chosen that modulation with carrier suppression is obtained. The load circuit 20 may include filters so as to select particular side bands at will.
GB22708/36A 1935-12-04 1936-08-18 Improvements in and relating to radio transmission systems Expired GB485642A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US485642XA 1935-12-04 1935-12-04

Publications (1)

Publication Number Publication Date
GB485642A true GB485642A (en) 1938-05-20

Family

ID=21955265

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22708/36A Expired GB485642A (en) 1935-12-04 1936-08-18 Improvements in and relating to radio transmission systems

Country Status (1)

Country Link
GB (1) GB485642A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2441127A (en) * 1942-09-10 1948-05-11 Tung Sol Lamp Works Inc Balanced modulator circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2441127A (en) * 1942-09-10 1948-05-11 Tung Sol Lamp Works Inc Balanced modulator circuit

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