GB488021A - A device for periodically varying the directional characteristic of an aerial system - Google Patents

A device for periodically varying the directional characteristic of an aerial system

Info

Publication number
GB488021A
GB488021A GB10423/38A GB1042338A GB488021A GB 488021 A GB488021 A GB 488021A GB 10423/38 A GB10423/38 A GB 10423/38A GB 1042338 A GB1042338 A GB 1042338A GB 488021 A GB488021 A GB 488021A
Authority
GB
United Kingdom
Prior art keywords
aerial
directional
relay
switch
energized
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
GB10423/38A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB488021A publication Critical patent/GB488021A/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
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Transmitters (AREA)
  • Selective Calling Equipment (AREA)
GB10423/38A 1936-05-14 1937-05-11 A device for periodically varying the directional characteristic of an aerial system Expired GB488021A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL488021X 1936-05-14

Publications (1)

Publication Number Publication Date
GB488021A true GB488021A (en) 1938-06-29

Family

ID=19786651

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10423/38A Expired GB488021A (en) 1936-05-14 1937-05-11 A device for periodically varying the directional characteristic of an aerial system

Country Status (4)

Country Link
DE (1) DE728539C (en:Method)
FR (1) FR821845A (en:Method)
GB (1) GB488021A (en:Method)
NL (1) NL52622C (en:Method)

Also Published As

Publication number Publication date
DE728539C (de) 1942-11-28
FR821845A (fr) 1937-12-14
NL52622C (en:Method)

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