GB157304A - Improvements relating to circuit arrangements for high frequency telephony - Google Patents

Improvements relating to circuit arrangements for high frequency telephony

Info

Publication number
GB157304A
GB157304A GB1215/21A GB121521A GB157304A GB 157304 A GB157304 A GB 157304A GB 1215/21 A GB1215/21 A GB 1215/21A GB 121521 A GB121521 A GB 121521A GB 157304 A GB157304 A GB 157304A
Authority
GB
United Kingdom
Prior art keywords
circuit
valve
frequency
receiving
local
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
GB1215/21A
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.)
DEUTSCHE TELEPHONWERKE GmbH
Original Assignee
DEUTSCHE TELEPHONWERKE 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 DEUTSCHE TELEPHONWERKE GmbH filed Critical DEUTSCHE TELEPHONWERKE GmbH
Publication of GB157304A publication Critical patent/GB157304A/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
    • H04B1/58—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
GB1215/21A 1918-09-17 1921-01-10 Improvements relating to circuit arrangements for high frequency telephony Expired GB157304A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE157304X 1918-09-17

Publications (1)

Publication Number Publication Date
GB157304A true GB157304A (en) 1922-01-19

Family

ID=5678553

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1215/21A Expired GB157304A (en) 1918-09-17 1921-01-10 Improvements relating to circuit arrangements for high frequency telephony

Country Status (3)

Country Link
DE (1) DE312589C (enrdf_load_stackoverflow)
FR (1) FR532577A (enrdf_load_stackoverflow)
GB (1) GB157304A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
DE312589C (enrdf_load_stackoverflow)
FR532577A (fr) 1922-02-07

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