GB314535A - Improvements in or relating to keying systems for radio and like valve transmitters - Google Patents

Improvements in or relating to keying systems for radio and like valve transmitters

Info

Publication number
GB314535A
GB314535A GB19494/29A GB1949429A GB314535A GB 314535 A GB314535 A GB 314535A GB 19494/29 A GB19494/29 A GB 19494/29A GB 1949429 A GB1949429 A GB 1949429A GB 314535 A GB314535 A GB 314535A
Authority
GB
United Kingdom
Prior art keywords
valve
keying
relating
radio
grid
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
GB19494/29A
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.)
Telefunken AG
Original Assignee
Telefunken AG
Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
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 Telefunken AG, Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH filed Critical Telefunken AG
Publication of GB314535A publication Critical patent/GB314535A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)

Abstract

314,535. Telefunken Ges. f³r Drahtlose Telegraphie. June 30, 1928, [Convention date]. Keying systems.-In a valve transmitter, in which keying is effected through the medium of a valve or valves M in the grid directcurrent circuit of the main valve H, the key T is connected between the anode and grid, and a biasing battery B, in series with a resistance RG, is connected between the grid and filament of the keying-valve. The invention may be applied to an oscillating modulation valve (Fig. 2, not shown).
GB19494/29A 1928-06-30 1929-06-25 Improvements in or relating to keying systems for radio and like valve transmitters Expired GB314535A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE314535X 1928-06-30

Publications (1)

Publication Number Publication Date
GB314535A true GB314535A (en) 1930-07-17

Family

ID=6146456

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19494/29A Expired GB314535A (en) 1928-06-30 1929-06-25 Improvements in or relating to keying systems for radio and like valve transmitters

Country Status (4)

Country Link
US (1) US1874891A (en)
BE (1) BE361597A (en)
GB (1) GB314535A (en)
NL (1) NL27128C (en)

Also Published As

Publication number Publication date
NL27128C (en)
BE361597A (en)
US1874891A (en) 1932-08-30

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