GB504253A - Improvements in radio direction finders - Google Patents

Improvements in radio direction finders

Info

Publication number
GB504253A
GB504253A GB25935/38A GB2593538A GB504253A GB 504253 A GB504253 A GB 504253A GB 25935/38 A GB25935/38 A GB 25935/38A GB 2593538 A GB2593538 A GB 2593538A GB 504253 A GB504253 A GB 504253A
Authority
GB
United Kingdom
Prior art keywords
sept
aerial
deflecting plates
indicator
radio direction
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
GB25935/38A
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.)
Telefunken AG
Original Assignee
Telefunken AG
Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
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 Telefunken AG, Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH filed Critical Telefunken AG
Publication of GB504253A publication Critical patent/GB504253A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
    • G01S3/14—Systems for determining direction or deviation from predetermined direction

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Radio Relay Systems (AREA)

Abstract

504,253. Directive wireless signalling. TELEFUNKEN GES. FUR DRASTLOSE TELEGRAPHIE. Sept. 5, 1938, No. 25935. Convention date, Sept. 8, 1937. Addition to 498,995. [Class 40 (v)] In a parallel-frame direction-finder of the kind described in the parent Specification, the input from the two main frames a, b is switched alternately at d, e to the deflecting plates m of the cathode-ray indicator o, in order to avoid the difficulty of amplifying the voltages at f and g without affecting their phase-relation. The pick-up from the centre frame-aerial c is applied constantly to the deflecting plates k of the indicator. Each aerial produces its own trace as shown at p, q, Fig. 2, and the critical bearing is shown when these coalesce into a single line as shown in Fig. 4. The switches d, e are coupled together so that when one is open the other is closed, and vice versa.
GB25935/38A 1937-09-08 1938-09-05 Improvements in radio direction finders Expired GB504253A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE504253X 1937-09-08

Publications (1)

Publication Number Publication Date
GB504253A true GB504253A (en) 1939-04-21

Family

ID=6546168

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25935/38A Expired GB504253A (en) 1937-09-08 1938-09-05 Improvements in radio direction finders

Country Status (1)

Country Link
GB (1) GB504253A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2473491A (en) * 1944-02-26 1949-06-14 Hartford Nat Bank & Trust Co Direction finding device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2473491A (en) * 1944-02-26 1949-06-14 Hartford Nat Bank & Trust Co Direction finding device

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