FR577307A - Perfectionnements aux radiocommunications duplex - Google Patents

Perfectionnements aux radiocommunications duplex

Info

Publication number
FR577307A
FR577307A FR577307DA FR577307A FR 577307 A FR577307 A FR 577307A FR 577307D A FR577307D A FR 577307DA FR 577307 A FR577307 A FR 577307A
Authority
FR
France
Prior art keywords
radiocommunications
duplex
duplex radiocommunications
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.)
SIF Societe Independante de Telegraphie Sans Fil
Original Assignee
SIF Societe Independante de Telegraphie Sans Fil
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 SIF Societe Independante de Telegraphie Sans Fil filed Critical SIF Societe Independante de Telegraphie Sans Fil
Application granted granted Critical
Publication of FR577307A publication Critical patent/FR577307A/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
    • H04B1/50—Circuits using different frequencies for the two directions of communication
FR577307D 1924-02-19 1924-02-19 Perfectionnements aux radiocommunications duplex Expired FR577307A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR577307T 1924-02-19

Publications (1)

Publication Number Publication Date
FR577307A true FR577307A (fr) 1924-09-03

Family

ID=8954633

Family Applications (1)

Application Number Title Priority Date Filing Date
FR577307D Expired FR577307A (fr) 1924-02-19 1924-02-19 Perfectionnements aux radiocommunications duplex

Country Status (1)

Country Link
FR (1) FR577307A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2454810A (en) * 1943-01-23 1948-11-30 Standard Telephones Cables Ltd Radio transmitting and receiving system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2454810A (en) * 1943-01-23 1948-11-30 Standard Telephones Cables Ltd Radio transmitting and receiving system

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