GB149215A - Improvements in and relating to arrangements for the combined transmission and reception of wireless signals - Google Patents

Improvements in and relating to arrangements for the combined transmission and reception of wireless signals

Info

Publication number
GB149215A
GB149215A GB20962/20A GB2096220A GB149215A GB 149215 A GB149215 A GB 149215A GB 20962/20 A GB20962/20 A GB 20962/20A GB 2096220 A GB2096220 A GB 2096220A GB 149215 A GB149215 A GB 149215A
Authority
GB
United Kingdom
Prior art keywords
microphone
currents
common circuit
telephony
coupled
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
GB20962/20A
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.)
Dr Erich F Huth GmbH
Original Assignee
Dr Erich F Huth GmbH
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 Dr Erich F Huth GmbH filed Critical Dr Erich F Huth GmbH
Publication of GB149215A publication Critical patent/GB149215A/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
    • 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
    • H04B1/56—Circuits using the same frequency for two directions of communication with provision for simultaneous communication in two directions

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Transmitters (AREA)
GB20962/20A 1917-08-28 1920-07-12 Improvements in and relating to arrangements for the combined transmission and reception of wireless signals Expired GB149215A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE307683T 1917-08-28

Publications (1)

Publication Number Publication Date
GB149215A true GB149215A (en) 1922-01-12

Family

ID=6121478

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20962/20A Expired GB149215A (en) 1917-08-28 1920-07-12 Improvements in and relating to arrangements for the combined transmission and reception of wireless signals

Country Status (4)

Country Link
CH (1) CH95308A (enrdf_load_stackoverflow)
DE (1) DE307683C (enrdf_load_stackoverflow)
FR (1) FR541208A (enrdf_load_stackoverflow)
GB (1) GB149215A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
CH95308A (de) 1922-07-01
DE307683C (enrdf_load_stackoverflow) 1919-10-06
FR541208A (fr) 1922-07-25

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