GB849325A - Improvements in or relating to radio direction finders - Google Patents

Improvements in or relating to radio direction finders

Info

Publication number
GB849325A
GB849325A GB16725/59A GB1672559A GB849325A GB 849325 A GB849325 A GB 849325A GB 16725/59 A GB16725/59 A GB 16725/59A GB 1672559 A GB1672559 A GB 1672559A GB 849325 A GB849325 A GB 849325A
Authority
GB
United Kingdom
Prior art keywords
radio direction
finders
unswitched
aerial
receiver
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
GB16725/59A
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
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 filed Critical Telefunken AG
Publication of GB849325A publication Critical patent/GB849325A/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

Abstract

849,325. Radio direction-finders. TELEFUNKEN G.m.b.H. May 15, 1959 [May 22, 1958], No. 16725/59. Drawings to Specification. Class 40(7). Relates to radio direction-finders wherein different parts of an aerial system are switched consecutively to a common tunable receiver whose output is switched synchronously to frequency-selective channels leading to a bearing display device. According to the invention means are provided for interrupting the receiver input switching and substituting unswitched signals derived from the aerial system. This enables receiver tuning to be effected without interference from the switching modulation sidebands. The embodiment comprises two mutually perpendicular loop aerials and a sense aerial, the unswitched signals being obtained from the loop outputs combined in phase quadrature and the bearing being displayed on a cathode-ray tube, Fig. 2 (not shown).
GB16725/59A 1958-05-22 1959-05-15 Improvements in or relating to radio direction finders Expired GB849325A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE849325X 1958-05-22

Publications (1)

Publication Number Publication Date
GB849325A true GB849325A (en) 1960-09-28

Family

ID=6775822

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16725/59A Expired GB849325A (en) 1958-05-22 1959-05-15 Improvements in or relating to radio direction finders

Country Status (1)

Country Link
GB (1) GB849325A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4489327A (en) * 1981-03-24 1984-12-18 Racal Communications Equipment Limited Direction finding

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4489327A (en) * 1981-03-24 1984-12-18 Racal Communications Equipment Limited Direction finding

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