GB548965A - Improved remote control arrangements applicable to adjustable antennae - Google Patents
Improved remote control arrangements applicable to adjustable antennaeInfo
- 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
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)
- Details Of Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (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.
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)
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)
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 |
-
0
- FR FR882607D patent/FR882607A/fr not_active Expired
- BE BE442118D patent/BE442118A/xx unknown
- NL NL62302D patent/NL62302C/xx active
-
1940
- 1940-02-29 US US321381A patent/US2283524A/en not_active Expired - Lifetime
-
1941
- 1941-02-28 GB GB10680/42A patent/GB548965A/en not_active Expired
- 1941-02-28 GB GB2757/41A patent/GB548202A/en not_active Expired
Cited By (3)
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 |
---|---|
US2283524A (en) | 1942-05-19 |
NL62302C (en) | |
BE442118A (en) | |
GB548202A (en) | 1942-09-30 |
FR882607A (en) | 1943-06-25 |
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