CH211212A - Anlage für Trägerfrequenztelephonie. - Google Patents

Anlage für Trägerfrequenztelephonie.

Info

Publication number
CH211212A
CH211212A CH211212DA CH211212A CH 211212 A CH211212 A CH 211212A CH 211212D A CH211212D A CH 211212DA CH 211212 A CH211212 A CH 211212A
Authority
CH
Switzerland
Prior art keywords
carrier frequency
frequency telephony
telephony
carrier
frequency
Prior art date
Application number
Other languages
German (de)
English (en)
Inventor
Bell Telephone Manufac Anonyme
Original Assignee
Bell Telephone Mfg
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 Mfg filed Critical Bell Telephone Mfg
Publication of CH211212A publication Critical patent/CH211212A/de

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/14—Arrangements providing for calling or supervisory signals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/04—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having negative temperature coefficient
    • 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)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
  • Devices For Supply Of Signal Current (AREA)
CH211212D 1936-12-02 1937-12-02 Anlage für Trägerfrequenztelephonie. CH211212A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US113820A US2117843A (en) 1936-12-02 1936-12-02 Frequency selective circuits

Publications (1)

Publication Number Publication Date
CH211212A true CH211212A (de) 1940-08-31

Family

ID=22351700

Family Applications (1)

Application Number Title Priority Date Filing Date
CH211212D CH211212A (de) 1936-12-02 1937-12-02 Anlage für Trägerfrequenztelephonie.

Country Status (5)

Country Link
US (1) US2117843A (en:Method)
BE (1) BE424937A (en:Method)
CH (1) CH211212A (en:Method)
FR (1) FR830249A (en:Method)
NL (1) NL49979C (en:Method)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2694163A (en) * 1951-03-16 1954-11-09 Joseph G Sola Voltage sensitive apparatus
US2801290A (en) * 1951-09-17 1957-07-30 Telefunken Gmbh Calling signal responder arrangements

Also Published As

Publication number Publication date
US2117843A (en) 1938-05-17
FR830249A (fr) 1938-07-25
NL49979C (en:Method)
BE424937A (en:Method)

Similar Documents

Publication Publication Date Title
CH212071A (de) Anlage für mehrfache Trägerwellenübertragung.
CH235154A (de) Fernmeldeanlage.
CH269949A (de) Anlage für leitungsgebundene Trägerfrequenz-Nachrichtenübertragung.
CH211212A (de) Anlage für Trägerfrequenztelephonie.
CH226472A (de) Geschoss für glatte Läufe.
CH212076A (de) Anlage für trägerfrequente Nachrichtenübermittlung auf Dezimeterrelaislinien.
FR802205A (fr) Porte-vif
CH239303A (de) Fernmeldeanlage.
CH189339A (de) Halter für Gartenspritzen.
CH206314A (de) Trägerwellentelephonieanlage.
CH194601A (de) Empfangsanlage für Hochfrequenzsignale.
DK55998C (da) Bærebølgeanlæg.
AT156098B (de) Fernsprechkabel.
AT148676B (de) Befestigungseinrichtung für Telephonhörerdeckel.
CH230160A (de) Schaltungsanordnung für Fernmeldeamtsanlagen.
DK56913C (da) Telefonanlæg.
FR817612A (fr) Avion porte-char
AT140829B (de) Übertragungssystem für Mehrfach-Trägerfrequenzbetrieb.
CH208857A (de) Telegraphenrelais.
CH207280A (de) Für den Kurzwellenempfang geeigneter Überlagerungsempfänger.
CH215525A (de) Anlage für Vielfach-Hochfrequenz-Nachrichtenübertragung über Drahtleitungen.
CH209269A (de) Vakuumrelais für hohe Spannungen.
AT155591B (de) Anschlußvorrichtung für ortsbewegliche Fernmeldeleitungen oder -kabel.
DK55112C (da) Frekvensreduktionssystem.
DK55135C (da) Strømpebaand.