BE523339A - - Google Patents

Info

Publication number
BE523339A
BE523339A BE523339DA BE523339A BE 523339 A BE523339 A BE 523339A BE 523339D A BE523339D A BE 523339DA BE 523339 A BE523339 A BE 523339A
Authority
BE
Belgium
Application number
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.)
Publication of BE523339A publication Critical patent/BE523339A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/446—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency
    • H04Q1/4465—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency the same frequency being used for all signalling information, e.g. A.C. nr.9 system

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
BE523339D 1952-06-27 BE523339A (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1624852A GB702253A (en) 1952-06-27 1952-06-27 Improvements in or relating to voice frequency signal receivers

Publications (1)

Publication Number Publication Date
BE523339A true BE523339A (zh)

Family

ID=10073874

Family Applications (1)

Application Number Title Priority Date Filing Date
BE523339D BE523339A (zh) 1952-06-27

Country Status (2)

Country Link
BE (1) BE523339A (zh)
GB (1) GB702253A (zh)

Also Published As

Publication number Publication date
GB702253A (en) 1954-01-13

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