GB243683A - Improvements in high frequency signalling systems - Google Patents

Improvements in high frequency signalling systems

Info

Publication number
GB243683A
GB243683A GB24878/25A GB2487825A GB243683A GB 243683 A GB243683 A GB 243683A GB 24878/25 A GB24878/25 A GB 24878/25A GB 2487825 A GB2487825 A GB 2487825A GB 243683 A GB243683 A GB 243683A
Authority
GB
United Kingdom
Prior art keywords
valve
plate
filament
grid
circuit
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
GB24878/25A
Other languages
English (en)
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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
Priority claimed from US752243A external-priority patent/US1696566A/en
Application filed by British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB243683A publication Critical patent/GB243683A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/54—Circuits using the same frequency for two directions of communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/44—Transmit/receive switching
    • H04B1/46—Transmit/receive switching by voice-frequency signals; by pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/04—Control of transmission; Equalising
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Amplifiers (AREA)
GB24878/25A 1924-11-25 1925-10-06 Improvements in high frequency signalling systems Expired GB243683A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US752243A US1696566A (en) 1924-11-25 1924-11-25 High-frequency duplex signaling system
US227821A US1696590A (en) 1924-11-25 1927-10-21 Signaling system

Publications (1)

Publication Number Publication Date
GB243683A true GB243683A (en) 1926-07-22

Family

ID=26921788

Family Applications (2)

Application Number Title Priority Date Filing Date
GB24878/25A Expired GB243683A (en) 1924-11-25 1925-10-06 Improvements in high frequency signalling systems
GB30503/28A Expired GB299316A (en) 1924-11-25 1928-10-22 Improvements in high frequency electric signalling systems

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB30503/28A Expired GB299316A (en) 1924-11-25 1928-10-22 Improvements in high frequency electric signalling systems

Country Status (6)

Country Link
US (1) US1696590A (US06342305-20020129-C00040.png)
BE (2) BE355192A (US06342305-20020129-C00040.png)
DE (2) DE500530C (US06342305-20020129-C00040.png)
FR (1) FR606311A (US06342305-20020129-C00040.png)
GB (2) GB243683A (US06342305-20020129-C00040.png)
NL (2) NL24644C (US06342305-20020129-C00040.png)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE755785C (de) * 1933-03-16 1952-03-31 Marconi Wireless Telegraph Co Anordnung zur automatischen Einschaltung eines Senders mit Hilfe von gleichgerichteten Modulationsschwingungen

Also Published As

Publication number Publication date
US1696590A (en) 1928-12-25
GB299316A (en) 1929-06-27
DE500305C (de) 1930-06-20
NL24644C (US06342305-20020129-C00040.png)
NL18958C (US06342305-20020129-C00040.png)
BE355192A (US06342305-20020129-C00040.png)
DE500530C (de) 1930-06-21
BE331740A (US06342305-20020129-C00040.png)
FR606311A (fr) 1926-06-11

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