FR1265255A - Long-distance signaling device - Google Patents

Long-distance signaling device

Info

Publication number
FR1265255A
FR1265255A FR827452A FR827452A FR1265255A FR 1265255 A FR1265255 A FR 1265255A FR 827452 A FR827452 A FR 827452A FR 827452 A FR827452 A FR 827452A FR 1265255 A FR1265255 A FR 1265255A
Authority
FR
France
Prior art keywords
long
signaling device
distance signaling
distance
signaling
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
FR827452A
Other languages
French (fr)
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.)
Compagnie de Signaux et dEntreprises Electriques SA
Original Assignee
Compagnie de Signaux et dEntreprises Electriques SA
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 Compagnie de Signaux et dEntreprises Electriques SA filed Critical Compagnie de Signaux et dEntreprises Electriques SA
Priority to FR827452A priority Critical patent/FR1265255A/en
Application granted granted Critical
Publication of FR1265255A publication Critical patent/FR1265255A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B13/00—Transmission systems characterised by the medium used for transmission, not provided for in groups H04B3/00 - H04B11/00
    • H04B13/02—Transmission systems in which the medium consists of the earth or a large mass of water thereon, e.g. earth telegraphy
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
    • H04Q9/08—Calling by using continuous ac
    • H04Q9/10—Calling by using continuous ac using single different frequencies
FR827452A 1960-05-17 1960-05-17 Long-distance signaling device Expired FR1265255A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR827452A FR1265255A (en) 1960-05-17 1960-05-17 Long-distance signaling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR827452A FR1265255A (en) 1960-05-17 1960-05-17 Long-distance signaling device

Publications (1)

Publication Number Publication Date
FR1265255A true FR1265255A (en) 1961-06-30

Family

ID=8731600

Family Applications (1)

Application Number Title Priority Date Filing Date
FR827452A Expired FR1265255A (en) 1960-05-17 1960-05-17 Long-distance signaling device

Country Status (1)

Country Link
FR (1) FR1265255A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110398991A (en) * 2019-08-22 2019-11-01 浦华环保有限公司 A kind of device for realizing automatic control equipment using wireless transmitter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110398991A (en) * 2019-08-22 2019-11-01 浦华环保有限公司 A kind of device for realizing automatic control equipment using wireless transmitter

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