GB397930A - Improvements in or relating to radio and other high frequency transmitters - Google Patents

Improvements in or relating to radio and other high frequency transmitters

Info

Publication number
GB397930A
GB397930A GB6627/32A GB662732A GB397930A GB 397930 A GB397930 A GB 397930A GB 6627/32 A GB6627/32 A GB 6627/32A GB 662732 A GB662732 A GB 662732A GB 397930 A GB397930 A GB 397930A
Authority
GB
United Kingdom
Prior art keywords
valves
valve
oscillating
source
absorber
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
GB6627/32A
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.)
MARCONI INTERNAT MARINE COMM C
Original Assignee
MARCONI INTERNAT MARINE COMM C
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 MARCONI INTERNAT MARINE COMM C filed Critical MARCONI INTERNAT MARINE COMM C
Priority to GB6627/32A priority Critical patent/GB397930A/en
Priority to DEM122115D priority patent/DE604122C/en
Priority to US658621A priority patent/US1972370A/en
Publication of GB397930A publication Critical patent/GB397930A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H04L27/04—Modulator circuits; Transmitter circuits

Abstract

397,930. Valve modulating circuits. MARCONI INTERNATIONAL MARINE COMMUNICATION CO., Ltd., Marconi House, Strand, and BEST, F. P., 9, Vicarage Road, Battersea, both in London. March 4, 1932, No. 6627. [Class 40 (v).] Relates to transmitting circuits of the type wherein the load on the source of high-tension current is maintained constant during keying and is made up of that due to the oscillating valve 1 and that due to an absorber valve 2 shunted across said source and comprises providing a key 9 in the alternating supply circuit A.C. of a rectifier unit 4 .. 8 adapted to supply grid biasing potentials to the valves 1, 2. The output from the rectifying unit is controlled by the resistance 8 and fed to a potentiometer 10, adjustable tappings of which are connected to the grids of the oscillating and absorber valves. The rectifying valves 4, 5 may be replaced by a metal rectifier and the output of the rectifier unit is smoothed by condenser 11 or other means which is said to eliminate "keyclicks."
GB6627/32A 1932-03-04 1932-03-04 Improvements in or relating to radio and other high frequency transmitters Expired GB397930A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB6627/32A GB397930A (en) 1932-03-04 1932-03-04 Improvements in or relating to radio and other high frequency transmitters
DEM122115D DE604122C (en) 1932-03-04 1932-12-10 Pushbutton circuit for high frequency transmitter with load compensation
US658621A US1972370A (en) 1932-03-04 1933-02-25 High frequency transmitter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB6627/32A GB397930A (en) 1932-03-04 1932-03-04 Improvements in or relating to radio and other high frequency transmitters

Publications (1)

Publication Number Publication Date
GB397930A true GB397930A (en) 1933-09-04

Family

ID=9817895

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6627/32A Expired GB397930A (en) 1932-03-04 1932-03-04 Improvements in or relating to radio and other high frequency transmitters

Country Status (3)

Country Link
US (1) US1972370A (en)
DE (1) DE604122C (en)
GB (1) GB397930A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE521897A (en) * 1952-08-03

Also Published As

Publication number Publication date
DE604122C (en) 1934-10-15
US1972370A (en) 1934-09-04

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