BE510949A - Spreekfrequente ontvanger - Google Patents

Spreekfrequente ontvanger

Info

Publication number
BE510949A
BE510949A BE510949A BE510949A BE510949A BE 510949 A BE510949 A BE 510949A BE 510949 A BE510949 A BE 510949A BE 510949 A BE510949 A BE 510949A BE 510949 A BE510949 A BE 510949A
Authority
BE
Belgium
Prior art keywords
frequency receiver
speech frequency
speech
receiver
frequency
Prior art date
Application number
BE510949A
Other languages
English (en)
Dutch (nl)
Original Assignee
Bell Telephone Manf Co 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 Bell Telephone Manf Co Sa filed Critical Bell Telephone Manf Co Sa
Publication of BE510949A publication Critical patent/BE510949A/nl

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)
  • Amplifiers (AREA)
  • Telephonic Communication Services (AREA)
  • Noise Elimination (AREA)
BE510949A 1951-04-27 1952-04-25 Spreekfrequente ontvanger BE510949A (nl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL160821A NL81147C (nl) 1951-04-27 1951-04-27 Ontvangstinrichting voor toonfrequentiesignalen

Publications (1)

Publication Number Publication Date
BE510949A true BE510949A (nl) 1953-11-06

Family

ID=29244855

Family Applications (1)

Application Number Title Priority Date Filing Date
BE510949A BE510949A (nl) 1951-04-27 1952-04-25 Spreekfrequente ontvanger

Country Status (8)

Country Link
US (1) US2698878A (en:Method)
BE (1) BE510949A (en:Method)
CH (1) CH318089A (en:Method)
DE (1) DE1001708B (en:Method)
ES (1) ES203030A1 (en:Method)
FR (1) FR1066097A (en:Method)
GB (1) GB704922A (en:Method)
NL (1) NL81147C (en:Method)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1097489B (de) * 1956-09-20 1961-01-19 Siemens Ag Schaltungsanordnung zum Empfang von durch zwei vorzugsweise tonfrequente Kennfrequenzen uebertragenen Zeichen
NL107582C (en:Method) * 1958-04-03
US3103558A (en) * 1959-09-24 1963-09-10 Int Standard Electric Corp ligotky
US3087999A (en) * 1959-12-08 1963-04-30 Motorola Inc Mobile dialing system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE434099A (en:Method) * 1938-05-07
FR864985A (fr) * 1940-01-03 1941-05-09 Soc Et Liaisons Telephoniques Procédé et dispositif d'appels destinés aux communications téléphoniques
BE476038A (en:Method) * 1944-12-26

Also Published As

Publication number Publication date
CH318089A (fr) 1956-12-15
ES203030A1 (es) 1952-06-01
FR1066097A (fr) 1954-06-02
GB704922A (en) 1954-03-03
NL81147C (nl) 1956-03-16
DE1001708B (de) 1957-01-31
US2698878A (en) 1955-01-04

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