FR609349A - Device for telegraphy or telephony by means of high frequency currents flowing in electric conductors - Google Patents

Device for telegraphy or telephony by means of high frequency currents flowing in electric conductors

Info

Publication number
FR609349A
FR609349A FR609349DA FR609349A FR 609349 A FR609349 A FR 609349A FR 609349D A FR609349D A FR 609349DA FR 609349 A FR609349 A FR 609349A
Authority
FR
France
Prior art keywords
telegraphy
telephony
high frequency
currents flowing
electric conductors
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
Other languages
French (fr)
Inventor
Emile Pfiffner
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 filed Critical
Application granted granted Critical
Publication of FR609349A publication Critical patent/FR609349A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H04B3/56—Circuits for coupling, blocking, or by-passing of signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Near-Field Transmission Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
FR609349D 1925-03-03 1926-01-14 Device for telegraphy or telephony by means of high frequency currents flowing in electric conductors Expired FR609349A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE248714X 1925-03-03

Publications (1)

Publication Number Publication Date
FR609349A true FR609349A (en) 1926-08-12

Family

ID=5935621

Family Applications (1)

Application Number Title Priority Date Filing Date
FR609349D Expired FR609349A (en) 1925-03-03 1926-01-14 Device for telegraphy or telephony by means of high frequency currents flowing in electric conductors

Country Status (4)

Country Link
US (1) US1865952A (en)
BE (1) BE331774A (en)
FR (1) FR609349A (en)
GB (1) GB248714A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR908688A (en) * 1942-02-20 1946-04-16 Constr Telephoniques High frequency traffic system on power transmission lines
FR957945A (en) * 1946-06-15 1950-02-28
US4473817A (en) * 1982-04-13 1984-09-25 Rockwell International Corporation Coupling power line communications signals around distribution transformers

Also Published As

Publication number Publication date
BE331774A (en)
GB248714A (en) 1926-11-25
US1865952A (en) 1932-07-05

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