CH319073A - Voice frequency receiver - Google Patents

Voice frequency receiver

Info

Publication number
CH319073A
CH319073A CH319073DA CH319073A CH 319073 A CH319073 A CH 319073A CH 319073D A CH319073D A CH 319073DA CH 319073 A CH319073 A CH 319073A
Authority
CH
Switzerland
Prior art keywords
frequency receiver
voice frequency
voice
receiver
frequency
Prior art date
Application number
Other languages
French (fr)
Inventor
Della Giovanna Ciro
Original Assignee
Standard Telephone & Radio Sa
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 Standard Telephone & Radio Sa filed Critical Standard Telephone & Radio Sa
Publication of CH319073A publication Critical patent/CH319073A/en

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
    • H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Noise Elimination (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
CH319073D 1951-07-10 1952-07-08 Voice frequency receiver CH319073A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT319073X 1951-07-10

Publications (1)

Publication Number Publication Date
CH319073A true CH319073A (en) 1957-01-31

Family

ID=11234479

Family Applications (1)

Application Number Title Priority Date Filing Date
CH319073D CH319073A (en) 1951-07-10 1952-07-08 Voice frequency receiver

Country Status (3)

Country Link
BE (1) BE512709A (en)
CH (1) CH319073A (en)
GB (1) GB710600A (en)

Also Published As

Publication number Publication date
GB710600A (en) 1954-06-16
BE512709A (en)

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