FR30524E - Perfectionnements aux postes radio-récepteurs - Google Patents

Perfectionnements aux postes radio-récepteurs

Info

Publication number
FR30524E
FR30524E FR30524DA FR30524E FR 30524 E FR30524 E FR 30524E FR 30524D A FR30524D A FR 30524DA FR 30524 E FR30524 E FR 30524E
Authority
FR
France
Prior art keywords
receivers
radio
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston 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 Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR30524E publication Critical patent/FR30524E/fr
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L3/00—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal
    • B61L3/02—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control
    • B61L3/08—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically
    • B61L3/12—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically using magnetic or electrostatic induction; using radio waves
    • B61L3/125—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically using magnetic or electrostatic induction; using radio waves using short-range radio transmission
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L3/00—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal
    • B61L3/02—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control
    • B61L3/08—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically
    • B61L3/12—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically using magnetic or electrostatic induction; using radio waves
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/30—Time-delay networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Near-Field Transmission Systems (AREA)
FR30524D 1922-11-21 1923-11-16 Perfectionnements aux postes radio-récepteurs Expired FR30524E (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US602426A US1658740A (en) 1922-11-21 1922-11-21 Radio receiving system

Publications (1)

Publication Number Publication Date
FR30524E true FR30524E (fr) 1926-07-18

Family

ID=24411302

Family Applications (1)

Application Number Title Priority Date Filing Date
FR30524D Expired FR30524E (fr) 1922-11-21 1923-11-16 Perfectionnements aux postes radio-récepteurs

Country Status (3)

Country Link
US (1) US1658740A (fr)
FR (1) FR30524E (fr)
GB (1) GB207535A (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2725533A (en) * 1941-01-28 1955-11-29 Wilmer L Barrow Bridge circuit embodying artificial transmission lines
US2423085A (en) * 1943-03-05 1947-07-01 Standard Telephones Cables Ltd Delay device
BE479622A (fr) * 1943-08-12
US4906006A (en) * 1989-04-28 1990-03-06 Phil Sigunick Practice golf device

Also Published As

Publication number Publication date
US1658740A (en) 1928-02-07
GB207535A (en) 1924-04-03

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