GB548965A - Improved remote control arrangements applicable to adjustable antennae - Google Patents

Improved remote control arrangements applicable to adjustable antennae

Info

Publication number
GB548965A
GB548965A GB10680/42A GB1068042A GB548965A GB 548965 A GB548965 A GB 548965A GB 10680/42 A GB10680/42 A GB 10680/42A GB 1068042 A GB1068042 A GB 1068042A GB 548965 A GB548965 A GB 548965A
Authority
GB
United Kingdom
Prior art keywords
motor
bridge
tuning
relay
antenna
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
GB10680/42A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB548965A publication Critical patent/GB548965A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/24—Continuous tuning of more than one resonant circuit simultaneously, the circuits being tuned to substantially the same frequency, e.g. for single-knob tuning
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00—Control of position or direction
    • G05D3/12—Control of position or direction using feedback
    • G05D3/14—Control of position or direction using feedback using an analogue comparing device
    • G05D3/1472—Control of position or direction using feedback using an analogue comparing device with potentiometer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/08—Means for collapsing antennas or parts thereof
    • H01Q1/10—Telescopic elements
    • H01Q1/103—Latching means; ensuring extension or retraction thereof

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Details Of Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

548,965. Remote control systems. WHITE, S. Y. Feb. 28, 1941, No. 10680/42. Convention date, Feb. 29, 1940. Divided out of 548,202. [Class 40 (i)] [Also in Group XL] Apparatus, such as an adjustable antenna, is controlled from a remote point by means of a reversible motor, the sense and extent of rotation of which is determined by means of a source of variable voltage disposed at the remote point and connected to the motor through a relay which is associated with a Wheatstone bridge disposed near the apparatus to be adjusted. Fig. 1 shows the invention applied to a mast aerial in which the exposed length of the antenna rod 76 is varied by moving a sleeve 79 up and down by means of a threaded rod 82 driven by an electric motor 83. The motor 83 is supplied through a Wheatstone bridge arrangement Fig. 6 in which one arm includes a lamp R7 whose resistance varies with current while another arm includes a rheostat R5 varied by a travelling nut 99 on the motor shaft. Across the bridge is a polarized relay PR with central off position controlling field coils FC, FC2 for driving the motor in opposite directions. The bridge is supplied through line 86 with a voltage which varies with the tuning through the medium of a potentiometer Rl coupled to the tuning knob 45. Thus, the motor runs until the bridge is balanced by adjustment of R5. Relay PR then opens the circuit and the antenna remains adjusted in accordance with the tuning. A modification is also described comprising two horizontal dipoles at right angles on a mast, in which adjustment of all four elements is effected simultaneously by a single motor through bevel gearing (Figs. 7-9 not shown). Specification 548,202 is referred to.
GB10680/42A 1940-02-29 1941-02-28 Improved remote control arrangements applicable to adjustable antennae Expired GB548965A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US321381A US2283524A (en) 1940-02-29 1940-02-29 Adjustable antenna device

Publications (1)

Publication Number Publication Date
GB548965A true GB548965A (en) 1942-10-30

Family

ID=23250379

Family Applications (2)

Application Number Title Priority Date Filing Date
GB10680/42A Expired GB548965A (en) 1940-02-29 1941-02-28 Improved remote control arrangements applicable to adjustable antennae
GB2757/41A Expired GB548202A (en) 1940-02-29 1941-02-28 Improvements in adjustable antenna devices

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB2757/41A Expired GB548202A (en) 1940-02-29 1941-02-28 Improvements in adjustable antenna devices

Country Status (5)

Country Link
US (1) US2283524A (en)
BE (1) BE442118A (en)
FR (1) FR882607A (en)
GB (2) GB548965A (en)
NL (1) NL62302C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2161026A (en) * 1984-06-29 1986-01-02 Racal Antennas Limited Antenna arrangements
GB2309830A (en) * 1996-01-29 1997-08-06 Nec Corp A portable radio antenna pair with their extending and retracting motion linked by a gear mechanism

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2415427A (en) * 1942-06-22 1947-02-11 Electronic Lab Inc Radio-frequency transmitter
US2484817A (en) * 1942-12-15 1949-10-18 Armond James Keller De Antenna for aircraft
US2472904A (en) * 1943-12-24 1949-06-14 Firm Autophon Ag Transmitting antenna with automatic tuning, particularly for aircraft wireless
US2430173A (en) * 1944-10-17 1947-11-04 Richard R Stoddart Remotely controlled antenna tuning apparatus
US2492989A (en) * 1946-02-09 1950-01-03 Farnsworth Res Corp Directive ultra high frequency antenna
US2569810A (en) * 1949-04-02 1951-10-02 Teleflex Antenna Co Folded dipole antenna
US2574733A (en) * 1949-04-16 1951-11-13 Tele Tone Radio Corp Tape antenna system
US3268898A (en) * 1962-12-12 1966-08-23 Avco Corp Demountable variable length antenna
FR2061538B1 (en) * 1969-05-07 1973-12-21 Commissariat Energie Atomique
FR2523232B1 (en) * 1982-03-09 1985-09-20 Thomson Csf TELESCOPIC COLUMN WITH CYLINDRICAL TUBES

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2161026A (en) * 1984-06-29 1986-01-02 Racal Antennas Limited Antenna arrangements
GB2309830A (en) * 1996-01-29 1997-08-06 Nec Corp A portable radio antenna pair with their extending and retracting motion linked by a gear mechanism
US5995809A (en) * 1996-01-29 1999-11-30 Nec Corporation Portable radio apparatus

Also Published As

Publication number Publication date
FR882607A (en) 1943-06-25
GB548202A (en) 1942-09-30
BE442118A (en)
US2283524A (en) 1942-05-19
NL62302C (en)

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