CH211740A - Device for transmitting calls in carrier frequency systems. - Google Patents

Device for transmitting calls in carrier frequency systems.

Info

Publication number
CH211740A
CH211740A CH211740DA CH211740A CH 211740 A CH211740 A CH 211740A CH 211740D A CH211740D A CH 211740DA CH 211740 A CH211740 A CH 211740A
Authority
CH
Switzerland
Prior art keywords
carrier frequency
frequency systems
transmitting calls
calls
transmitting
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellschaft C Lorenz
Original Assignee
Lorenz C Ag
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 Lorenz C Ag filed Critical Lorenz C Ag
Publication of CH211740A publication Critical patent/CH211740A/en

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
CH211740D 1938-08-04 1939-07-31 Device for transmitting calls in carrier frequency systems. CH211740A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE211740X 1938-08-04

Publications (1)

Publication Number Publication Date
CH211740A true CH211740A (en) 1940-10-15

Family

ID=5804333

Family Applications (1)

Application Number Title Priority Date Filing Date
CH211740D CH211740A (en) 1938-08-04 1939-07-31 Device for transmitting calls in carrier frequency systems.

Country Status (4)

Country Link
US (1) US2306121A (en)
BE (1) BE435784A (en)
CH (1) CH211740A (en)
FR (1) FR858563A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR959321A (en) * 1941-01-31 1950-03-29
FR960967A (en) * 1945-02-06 1950-04-28
US2600248A (en) * 1949-04-28 1952-06-10 Rca Corp Transmitter keyer
US2766324A (en) * 1951-12-18 1956-10-09 Motorola Inc Switching system
BE523372A (en) * 1952-10-08
US2910543A (en) * 1955-06-15 1959-10-27 Gen Telephone Lab Inc Paystation party line lockout systems

Also Published As

Publication number Publication date
US2306121A (en) 1942-12-22
FR858563A (en) 1940-11-28
BE435784A (en)

Similar Documents

Publication Publication Date Title
FR853355A (en) Multiple phone system
FR856154A (en) Advanced telephone system
CH211740A (en) Device for transmitting calls in carrier frequency systems.
FR951376A (en) Telephone system
FR853308A (en) Multiple phone system
CH210688A (en) Device on telephone sets with microtelephones.
CH231804A (en) Device for scanning films.
CH269949A (en) System for line-bound carrier frequency communication.
CH256353A (en) Device for transmitting calls in a carrier frequency system.
CH213942A (en) Electromechanical device for transmitting vibrations.
CH209383A (en) Adding machine for making lists.
CH211741A (en) Amplifier system in carrier frequency transmission systems.
CH232786A (en) Device for secret messaging.
FR837587A (en) Secret telecommunications system
CH204089A (en) Device for registering charges for telephone systems.
CH206314A (en) Carrier wave telephony system.
CH214051A (en) Carrier frequency transmission system.
CH226557A (en) Device for frequency multiplication.
CH228587A (en) Device for the transmission of messages.
CH227467A (en) Carrier frequency transmission system.
DK58907C (en) Device for multi-channel carrier frequency systems.
CH208095A (en) Multi-carrier frequency signaling system.
FR856889A (en) Telecommunication system
FR853572A (en) Telecommunication system
FR856180A (en) Braking device