FR703575A - Système de radio-téléphonie et télégraphie - Google Patents

Système de radio-téléphonie et télégraphie

Info

Publication number
FR703575A
FR703575A FR703575DA FR703575A FR 703575 A FR703575 A FR 703575A FR 703575D A FR703575D A FR 703575DA FR 703575 A FR703575 A FR 703575A
Authority
FR
France
Prior art keywords
telephony
radio
telegraph system
telegraph
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
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
INTERNAT RADIOPHONE CORP
Original Assignee
INTERNAT RADIOPHONE CORP
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 INTERNAT RADIOPHONE CORP filed Critical INTERNAT RADIOPHONE CORP
Application granted granted Critical
Publication of FR703575A publication Critical patent/FR703575A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/54—Circuits using the same frequency for two directions of communication
    • H04B1/56—Circuits using the same frequency for two directions of communication with provision for simultaneous communication in two directions

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)
  • Mobile Radio Communication Systems (AREA)
FR703575D 1929-10-31 1930-10-10 Système de radio-téléphonie et télégraphie Expired FR703575A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US403717A US2013173A (en) 1929-10-31 1929-10-31 System of radio telephony and telegraphy

Publications (1)

Publication Number Publication Date
FR703575A true FR703575A (fr) 1931-05-02

Family

ID=23596761

Family Applications (1)

Application Number Title Priority Date Filing Date
FR703575D Expired FR703575A (fr) 1929-10-31 1930-10-10 Système de radio-téléphonie et télégraphie

Country Status (3)

Country Link
US (1) US2013173A (fr)
FR (1) FR703575A (fr)
GB (1) GB370888A (fr)

Also Published As

Publication number Publication date
US2013173A (en) 1935-09-03
GB370888A (en) 1932-04-04

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